
Mars and the Solar Wind

Solar Panel Buffeted by Wind at Phoenix Site

The end of 2014 marks two decades of data from a NASA mission called Wind. Wind -- along with 17 other missions – is part of what's called the Heliophysics Systems Observatory, a fleet of spacecraft dedicated to understanding how the sun and its giant explosions affect Earth, the planets and beyond. Wind launched on Nov. 1, 1994, with the goal of characterizing the constant stream of particles from the sun called the solar wind. With particle observations once every 3 seconds, and 11 magnetic measurements every second, Wind measurements were – and still are – the highest cadence solar wind observations for any near-Earth spacecraft. <b><a href="http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html" rel="nofollow">NASA image use policy.</a></b> <b><a href="http://www.nasa.gov/centers/goddard/home/index.html" rel="nofollow">NASA Goddard Space Flight Center</a></b> enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission. <b>Follow us on <a href="http://twitter.com/NASAGoddardPix" rel="nofollow">Twitter</a></b> <b>Like us on <a href="http://www.facebook.com/pages/Greenbelt-MD/NASA-Goddard/395013845897?ref=tsd" rel="nofollow">Facebook</a></b> <b>Find us on <a href="http://instagrid.me/nasagoddard/?vm=grid" rel="nofollow">Instagram</a></b>

This diagram depicts conditions observed by NASA's Cassini spacecraft during a flyby in Dec. 2013, when Saturn's magnetosphere was highly compressed, exposing Titan to the full force of the solar wind. In analyzing data from the encounter, scientists with Cassini's magnetometer team observed that the giant moon interacted with the solar wind much like the planets Mars and Venus, or a comet -- none of which possess their own internal magnetic field. Specifically, they saw that the solar wind draped itself around Titan, creating a shockwave that formed around Titan where the full-force solar wind rammed into the moon's atmosphere. Previously, researchers had thought Titan would have a different sort of interaction with the solar wind because of the moon's complex atmospheric chemistry. http://photojournal.jpl.nasa.gov/catalog/PIA19055
MESSENGER Explores Interactions between Mercury Magnetosphere and the Solar Wind
Artist concept of the interaction of the solar wind the supersonic outflow of electrically charged particles from the Sun with Pluto predominantly nitrogen atmosphere based on NASA New Horizons SWAP instrument.

AS11-40-5964 (20 July 1969) --- Astronaut Edwin E. Aldrin Jr., lunar module pilot, is photographed during the Apollo 11 extravehicular activity (EVA) on the moon. He is driving one of two core tubes into the lunar soil. Astronaut Neil A. Armstrong, commander, took this picture with a 70mm lunar surface camera. Aldrin stands near the Solar Wind Composition (SWC) experiment, a component of the Early Apollo Scientific Experiments Package (EASEP, deployed earlier). The SWC is in the center background.

Sitting on the lunar surface, this Solar Wind Spectrometer is measuring the energies of the particles that make up the solar wind. This was one of the instruments used during the Apollo 12 mission. The second manned lunar landing mission, Apollo 12 launched from launch pad 39-A at Kennedy Space Center in Florida on November 14, 1969 via a Saturn V launch vehicle. The Saturn V vehicle was developed by the Marshall Space Flight Center (MSFC) under the direction of Dr. Wernher von Braun. Aboard Apollo 12 was a crew of three astronauts: Alan L. Bean, pilot of the Lunar Module (LM), Intrepid; Richard Gordon, pilot of the Command Module (CM), Yankee Clipper; and Spacecraft Commander Charles Conrad. The LM, Intrepid, landed astronauts Conrad and Bean on the lunar surface in what’s known as the Ocean of Storms while astronaut Richard Gordon piloted the CM, Yankee Clipper, in a parking orbit around the Moon. Lunar soil activities included the deployment of the Apollo Lunar Surface Experiments Package (ALSEP), finding the unmanned Surveyor 3 that landed on the Moon on April 19, 1967, and collecting 75 pounds (34 kilograms) of rock samples. Apollo 12 safely returned to Earth on November 24, 1969.

Solar panel and wind farm at the JSC Child Care Center. View of Jerry Rowlands, Energy Management and Control System manager for CSC.

Sensitive to Jupiter's stratospheric temperatures, these infrared images were recorded by the Cooled Mid-Infrared Camera and Spectrograph (COMICS) at the Subaru Telescope on the summit of Mauna Kea, Hawaii. Scientists used red, blue and yellow to infuse this infrared image; regions of the atmosphere that are more yellow and red indicate the hotter areas. This highlights the auroral heating that occurs at Jupiter's poles, where energy from the solar wind and magnetosphere are deposited. This image was captured on Jan. 12, 2017. https://photojournal.jpl.nasa.gov/catalog/PIA22774
An artist's concept illustrates the positions of the Voyager spacecraft in relation to structures formed around our Sun by the solar wind. Also illustrated is the termination shock, a violent region the spacecraft must pass through before reaching the outer limits of the solar system. At the termination shock, the supersonic solar wind abruptly slows from an average speed of 400 kilometers per second to less than 100 kilometer per second (900,000 to less than 225,000 miles per hour). Beyond the termination shock is the solar system's final frontier, the heliosheath, a vast region where the turbulent and hot solar wind is compressed as it presses outward against the interstellar wind that is beyond the heliopause. A bow shock likely forms as the interstellar wind approaches and is deflected around the heliosphere, forcing it into a teardrop-shaped structure with a long, comet-like tail. The exact location of the termination shock is unknown, and it originally was thought to be closer to the Sun than Voyager 1 currently is. As Voyager 1 cruised ever farther from the Sun, it confirmed that all the planets are inside an immense bubble blown by the solar wind and the termination shock was much more distant. http://photojournal.jpl.nasa.gov/catalog/PIA04927

NASA's InSight lander tried a novel approach to remove dust clinging to one of its solar panels. On May 22, 2021, the 884th Martian day, or sol, of the mission, the lander's robotic arm trickled sand above the panel. As wind carried the sand grains across the panel, they picked up some dust along the way, enabling the lander to gain about 30 watt-hours of energy per sol. Animation available at https://photojournal.jpl.nasa.gov/catalog/PIA24664

AS12-47-6898 (19 Nov. 1969) --- A close-up view of the Solar Wind Composition device. Astronaut Alan L. Bean, lunar module pilot, took this photograph, after having deployed the device. Astronauts Charles Conrad Jr., commander, and Bean descended in the Apollo 12 Lunar Module (LM) to explore the moon, while astronaut Richard F. Gordon Jr., command module pilot, remained in lunar orbit with the Command and Service Modules (CSM).

A dark coronal hole that was facing towards Earth for several days spewed streams of solar wind in our direction (Sept. 18-21, 2016). A coronal hole is a magnetically open region. The magnetic fields have opened up allowing solar wind (comprised of charged particles) to stream into space. Gusts of solar wind can generate beautiful aurora when they reach Earth. The video clip shows the sun in a wavelength of extreme ultraviolet light. Movies are available at http://photojournal.jpl.nasa.gov/catalog/PIA21067

This depiction of a simulated Mercury magnetosphere shows representations of the distortions of the planetary magnetic field lines blue by the solar wind.

AS11-40-5873 (20 July 1969) --- Astronaut Edwin E. Aldrin Jr., lunar module pilot, is photographed during the Apollo 11 extravehicular activity (EVA) on the lunar surface. In the right background is the lunar module. On Aldrin's right is the Solar Wind Composition (SWC) experiment, already deployed. This photograph was taken by astronaut Neil A. Armstrong, commander, with a 70mm lunar surface camera.

This artist concept shows how NASA Voyager 1 spacecraft is bathed in solar wind from the southern hemisphere flowing northward. This phenomenon creates a layer of giant bubble of solar ions just inside the outer boundary of the heliosphere.

The dark region seen on the face of the sun at the end of March 2013 is a coronal hole just above and to the right of the middle of the picture, which is a source of fast solar wind leaving the sun in this image from NASA Solar Dynamic Observatory.

Two good-sized coronal holes have rotated around to the center of the sun where they will be spewing solar wind towards Earth (Nov. 8-9, 2016). Coronal holes are areas of open magnetic field from which solar wind particles stream into space. In this wavelength of extreme ultraviolet light they appear as the two dark areas at the center and lower portion of the sun. The stream of particles should reach Earth in a few days and are likely to generate aurora. Videos are available at http://photojournal.jpl.nasa.gov/catalog/PIA16909

A substantial coronal hole rotated across the face of the sun this past week and is again streaming solar wind towards Earth (Jan. 30 - Feb. 2, 2017). This same coronal hole was facing Earth about a month ago and has rotated into a similar position again. Coronal holes are areas of open magnetic field from which solar wind particles stream into space. In this wavelength of extreme ultraviolet light it appears as a dark area near the center and lower portion of the sun. Movies are available at http://photojournal.jpl.nasa.gov/catalog/PIA11177

An elongated coronal hole rotated across the face of the sun this past week so that it is now streaming solar wind towards Earth (Jan. 2-5, 2017). Coronal holes are areas of open magnetic field from which solar wind particles stream into space. In this wavelength of extreme ultraviolet light it appears as a dark area near the center and lower portion of the sun. The particle stream will likely generate aurora here on Earth. Check spaceweather.com for updates on auroral activity. Movies are available at http://photojournal.jpl.nasa.gov/catalog/PIA14093

Two small spacecrafts satellites that make up NASA’s ESCAPADE (Escape and Plasma Acceleration and Dynamics Explorers) mission to Mars arrived at Astrotech Space Operations in Titusville, near NASA’s Kennedy Space Center in Florida on Sunday, Aug. 19, 2024. Set to launch from Blue Origin’s New Glenn rocket, the Rocket Lab spacecraft will study the solar wind and how the solar wind interacts with Mars’ magnetic environment and how this interaction drives the planet’s atmospheric escape.

Two small spacecrafts satellites that make up NASA’s ESCAPADE (Escape and Plasma Acceleration and Dynamics Explorers) mission to Mars arrived at Astrotech Space Operations in Titusville, near NASA’s Kennedy Space Center in Florida on Sunday, Aug. 19, 2024. Set to launch from Blue Origin’s New Glenn rocket, the Rocket Lab spacecraft will study the solar wind and how the solar wind interacts with Mars’ magnetic environment and how this interaction drives the planet’s atmospheric escape.

Two small spacecrafts satellites that make up NASA’s ESCAPADE (Escape and Plasma Acceleration and Dynamics Explorers) mission to Mars arrived at Astrotech Space Operations in Titusville, near NASA’s Kennedy Space Center in Florida on Sunday, Aug. 19, 2024. Set to launch from Blue Origin’s New Glenn rocket, the Rocket Lab spacecraft will study the solar wind and how the solar wind interacts with Mars’ magnetic environment and how this interaction drives the planet’s atmospheric escape.

AS14-66-9322 (5-6 Feb. 1971) --- This photograph taken through a window of the Apollo 14 Lunar Module (LM), on the moon, shows an excellent view of the nearby terrain. In the center background is the deployed solar wind composition (SWC) experiment. Two LM RCS thrusters are silhouetted in the left foreground. While astronauts Alan B. Shepard Jr., commander; and Edgar D. Mitchell, lunar module pilot; descended in the LM, astronaut Stuart A. Roosa, command module pilot, remained with the Command and Service Modules (CSM) in lunar orbit.

NASA’s TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) mission launches at 11:13 a.m. PDT (2:13 p.m. EDT) on Wednesday, July 23, 2025, atop a SpaceX Falcon 9 rocket at Space Launch Complex 4 East at Vandenberg Space Force Base in California. The TRACERS mission will study magnetic reconnection around Earth — a process in which electrically charged plasmas exchange energy in the atmosphere — to understand how the Sun’s solar wind interacts with the magnetosphere, Earth’s protective magnetic shield.

NASA’s TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) mission launches at 11:13 a.m. PDT (2:13 p.m. EDT) on Wednesday, July 23, 2025, atop a SpaceX Falcon 9 rocket at Space Launch Complex 4 East at Vandenberg Space Force Base in California. The TRACERS mission will study magnetic reconnection around Earth — a process in which electrically charged plasmas exchange energy in the atmosphere — to understand how the Sun’s solar wind interacts with the magnetosphere, Earth’s protective magnetic shield.

NASA’s TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) mission launches at 11:13 a.m. PDT (2:13 p.m. EDT) on Wednesday, July 23, 2025, atop a SpaceX Falcon 9 rocket at Space Launch Complex 4 East at Vandenberg Space Force Base in California. The TRACERS mission will study magnetic reconnection around Earth — a process in which electrically charged plasmas exchange energy in the atmosphere — to understand how the Sun’s solar wind interacts with the magnetosphere, Earth’s protective magnetic shield.

NASA’s TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) mission launches at 11:13 a.m. PDT (2:13 p.m. EDT) on Wednesday, July 23, 2025, atop a SpaceX Falcon 9 rocket at Space Launch Complex 4 East at Vandenberg Space Force Base in California. The TRACERS mission will study magnetic reconnection around Earth — a process in which electrically charged plasmas exchange energy in the atmosphere — to understand how the Sun’s solar wind interacts with the magnetosphere, Earth’s protective magnetic shield.

NASA’s TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) mission launches at 11:13 a.m. PDT (2:13 p.m. EDT) on Wednesday, July 23, 2025, atop a SpaceX Falcon 9 rocket at Space Launch Complex 4 East at Vandenberg Space Force Base in California. The TRACERS mission will study magnetic reconnection around Earth — a process in which electrically charged plasmas exchange energy in the atmosphere — to understand how the Sun’s solar wind interacts with the magnetosphere, Earth’s protective magnetic shield.

NASA’s TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) mission launches at 11:13 a.m. PDT (2:13 p.m. EDT) on Wednesday, July 23, 2025, atop a SpaceX Falcon 9 rocket at Space Launch Complex 4 East at Vandenberg Space Force Base in California. The TRACERS mission will study magnetic reconnection around Earth — a process in which electrically charged plasmas exchange energy in the atmosphere — to understand how the Sun’s solar wind interacts with the magnetosphere, Earth’s protective magnetic shield.

NASA’s TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) mission launches at 11:13 a.m. PDT (2:13 p.m. EDT) on Wednesday, July 23, 2025, atop a SpaceX Falcon 9 rocket at Space Launch Complex 4 East at Vandenberg Space Force Base in California. The TRACERS mission will study magnetic reconnection around Earth — a process in which electrically charged plasmas exchange energy in the atmosphere — to understand how the Sun’s solar wind interacts with the magnetosphere, Earth’s protective magnetic shield.

A SpaceX Falcon 9 rocket carrying NASA’s TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) mission stands vertical Tuesday, July 22, 2025, at Space Launch Complex 4 East at Vandenberg Space Force Base in California. The TRACERS mission will study magnetic reconnection around Earth — a process in which electrically charged plasmas exchange energy in the atmosphere — to understand how the Sun’s solar wind interacts with the magnetosphere, Earth’s protective magnetic shield.

A false-color self-portrait of NASA Mars Exploration Rover Opportunity taken by the rover panoramic camera Pancam shows effects of recent winds removing much of the dust from the solar arrays.

This illustration shows quasi-parallel top and quasi-perpendicular bottom magnetic field conditions at a planetary bow shock. Bow shocks are shockwaves created when the solar wind blows on a planet magnetic field.

A self-portrait of NASA Mars Exploration Rover Opportunity taken by the rover panoramic camera Pancam in late March 2014 shows effects of recent winds removing much of the dust from the rover solar arrays.

Data from NASA Cassini spacecraft have enabled scientists to create this map of the heliosphere, the bubble of charged particles around our sun. Charged particles stream out from our sun in a phenomenon known as solar wind.

For much of this week the sun featured three substantial coronal holes (Apr. 3-6, 2018). Coronal holes appear as large dark areas which are identified with arrows in the still image. These are areas of open magnetic field from which high speed solar wind rushes out into space. This wind, if it interacts with Earth's magnetosphere, can cause aurora to appear near the poles. They are not at all uncommon. Animations are available at https://photojournal.jpl.nasa.gov/catalog/PIA22414

The specks in the sequence of images in this video were caused by charged particles from a solar storm hitting one of the navigation cameras aboard NASA's Curiosity Mars rover. The mission uses the rover's navigation cameras to try capturing images of dust devils (dust-bearing whirlwinds) and wind gusts, like the gust seen here. By chance, the gust occurred at the same time that charged particles began to strike the Martian surface on May 20, 2024, the 4,190th Martian day, or sol, of the mission. The particles do not damage the camera. Curiosity's Radiation Assessment Detector (RAD) measured a sharp increase in radiation at this time – the biggest radiation surge the mission has seen since landing in 2012. Animation available at https://photojournal.jpl.nasa.gov/catalog/PIA26303
Over 1300 energy spectra taken on September 22, 2001 from the ion and electron instruments on NASA Deep Space 1 span a region of 1,400,000 kilometers 870,000 miles centered on the closest approach to the nucleus of comet Borrelly.

Three substantial coronal holes rotated across the face of the Sun the week of Sept. 8-10, 2015 as seen by NASA Solar Dynamics Observatory. Coronal holes are areas where the Sun magnetic field is open and a source of streaming solar wind. They appear darker in extreme ultraviolet light because there is less material in the hole areas being imaged in this specific wavelength of light. It is a little unusual to have three coronal holes at the same time, but neither is it a rare occurrence. http://photojournal.jpl.nasa.gov/catalog/PIA19950

An international effort to learn more about the complex interaction between the Earth and Sun took another step forward with the launch of WIND spacecraft from Kennedy Space Center (KSC). WIND spacecraft is studded with eight scientific instruments - six US, one French, and one - the first Russian instrument to fly on a US spacecraft - that collected data about the influence of the solar wind on the Earth and its atmosphere. WIND is part of the Global Geospace Science (GGS) initiative, the US contribution to NASA's International Solar Terrestrial Physics (ISTP) program.

Technicians encapsulate the black twin satellites of NASA’s TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) mission within a payload fairing atop a shiny metallic stack of several other rideshare payloads at the Astrotech Space Operations facility at Vandenberg Space Force Base in California. The TRACERS mission is a pair of twin satellites that will study how Earth’s magnetic shield — the magnetosphere — protects our planet from the supersonic stream of material from the Sun called solar wind.

Technicians reintegrate the Solar Wind and Pickup Ions (SWAPI) instrument of NASA’s IMAP (Interstellar Mapping and Acceleration Probe) observatory inside the high bay at the Astrotech Space Operations Facility near the agency’s Kennedy Space Center in Florida on Monday, June 23, 2025. As IMAP spins in space, solar wind particles are swept into SWAPI through a special opening called “sunglasses,” an opening covered by a screen with very tiny precise holes that cut down the brightness of the very intense solar wind. SWAPI collects and counts particles from the solar wind flowing from the Sun and particles called pick-up ions that have entered the heliosphere from outside the solar system and traveled inwards where IMAP orbits near Earth. Launch of the IMAP mission is targeted for no earlier than September 2025 aboard a SpaceX Falcon 9 rocket from Launch Complex 39A at NASA Kennedy.

Technicians reintegrate the Solar Wind and Pickup Ions (SWAPI) instrument of NASA’s IMAP (Interstellar Mapping and Acceleration Probe) observatory inside the high bay at the Astrotech Space Operations Facility near the agency’s Kennedy Space Center in Florida on Monday, June 23, 2025. As IMAP spins in space, solar wind particles are swept into SWAPI through a special opening called “sunglasses,” an opening covered by a screen with very tiny precise holes that cut down the brightness of the very intense solar wind. SWAPI collects and counts particles from the solar wind flowing from the Sun and particles called pick-up ions that have entered the heliosphere from outside the solar system and traveled inwards where IMAP orbits near Earth. Launch of the IMAP mission is targeted for no earlier than September 2025 aboard a SpaceX Falcon 9 rocket from Launch Complex 39A at NASA Kennedy.

Technicians reintegrate the Solar Wind and Pickup Ions (SWAPI) instrument of NASA’s IMAP (Interstellar Mapping and Acceleration Probe) observatory inside the high bay at the Astrotech Space Operations Facility near the agency’s Kennedy Space Center in Florida on Monday, June 23, 2025. As IMAP spins in space, solar wind particles are swept into SWAPI through a special opening called “sunglasses,” an opening covered by a screen with very tiny precise holes that cut down the brightness of the very intense solar wind. SWAPI collects and counts particles from the solar wind flowing from the Sun and particles called pick-up ions that have entered the heliosphere from outside the solar system and traveled inwards where IMAP orbits near Earth. Launch of the IMAP mission is targeted for no earlier than September 2025 aboard a SpaceX Falcon 9 rocket from Launch Complex 39A at NASA Kennedy.

Technicians perform tests the Solar Wind and Pickup Ions (SWAPI) instrument of NASA’s IMAP (Interstellar Mapping and Acceleration Probe) observatory inside the high bay at the Astrotech Space Operations Facility near the agency’s Kennedy Space Center in Florida on Tuesday, June 17, 2025. As IMAP spins in space, solar wind particles are swept into SWAPI through a special opening called “sunglasses,” an opening covered by a screen with very tiny precise holes that cut down the brightness of the very intense solar wind. SWAPI collects and counts particles from the solar wind flowing from the Sun and particles called pick-up ions that have entered the heliosphere from outside the solar system and traveled inwards where IMAP orbits near Earth. Launch of the IMAP mission is targeted for no earlier than September 2025 aboard a SpaceX Falcon 9 rocket from Launch Complex 39A at NASA Kennedy.

Technicians perform tests the Solar Wind and Pickup Ions (SWAPI) instrument of NASA’s IMAP (Interstellar Mapping and Acceleration Probe) observatory inside the high bay at the Astrotech Space Operations Facility near the agency’s Kennedy Space Center in Florida on Tuesday, June 17, 2025. As IMAP spins in space, solar wind particles are swept into SWAPI through a special opening called “sunglasses,” an opening covered by a screen with very tiny precise holes that cut down the brightness of the very intense solar wind. SWAPI collects and counts particles from the solar wind flowing from the Sun and particles called pick-up ions that have entered the heliosphere from outside the solar system and traveled inwards where IMAP orbits near Earth. Launch of the IMAP mission is targeted for no earlier than September 2025 aboard a SpaceX Falcon 9 rocket from Launch Complex 39A at NASA Kennedy.

Graphic Art Venus - Day - Night drawing showing solar wind, bow shock, magnetosheath, clouds and streamers Pioneer Venus SP-461 fig 6-28 Interaction of the solar wind with the atmosphere of Venus as termined from Pioner Venus experiments and observations

A SpaceX Falcon 9 first stage booster lands on Landing Zone 4 following liftoff of NASA’s TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) mission at Space Launch Complex 4 East at Vandenberg Space Force Base in California on Wednesday, July 23, 2025. This was the 16th flight for the first stage booster, which has previously launched these NASA missions - PACE (Plankton, Aerosol, Cloud, ocean Ecosystem, NASA’s SpaceX Crew-7, and Commercial Resupply Services-29. The TRACERS mission will study magnetic reconnection around Earth — a process in which electrically charged plasmas exchange energy in the atmosphere — to understand how the Sun’s solar wind interacts with the magnetosphere, Earth’s protective magnetic shield.

CAPE CANAVERAL, Fla. -- At Cape Canaveral Air Force Station in Florida, technicians in NASA’s AO Building on Cape Canaveral Air Station move the Wind spacecraft to a work stand. Wind is scheduled for launch on a Delta II expendable launch vehicle. Wind is the first of two missions of the Global Geospace Science Initiative, part of the worldwide collaboration for the International Solar-Terrestrial Physics ISTP program. It will carry six U.S. instruments, one French instrument and the first Russian instrument to ever fly on an American satellite, as part of an effort to measure properties of the solar wind before it reaches Earth. Photo Credit: NASA

An extensive equatorial coronal hole has rotated so that it is now facing Earth (May 2-4, 2018). The dark coronal hole extends about halfway across the solar disk. It was observed in a wavelength of extreme ultraviolet light. This magnetically open area is streaming solar wind (i.e., a stream of charged particles released from the sun) into space. When Earth enters a solar wind stream and the stream interacts with our magnetosphere, we often experience nice displays of aurora. https://photojournal.jpl.nasa.gov/catalog/PIA00577

An extensive equatorial coronal hole has rotated so that it is now facing Earth (May 2-4, 2018). The dark coronal hole extends about halfway across the solar disk. It was observed in a wavelength of extreme ultraviolet light. This magnetically open area is streaming solar wind (i.e., a stream of charged particles released from the sun) into space. When Earth enters a solar wind stream and the stream interacts with our magnetosphere, we often experience nice displays of aurora. Videos are available at https://photojournal.jpl.nasa.gov/catalog/PIA00624

A large coronal hole has been spewing solar wind particles in the general direction of Earth over the past few days (Aug. 31- Sept. 1, 2017). It is the extensive dark area that stretches from the top of the sun and angles down to the right. Coronal holes are areas of open magnetic field, which allow charge particles to escape into space. They appear dark in certain wavelengths of extreme ultraviolet light such as shown here. These clouds of particles can cause aurora to appear, particularly in higher latitude regions. Movies are available at https://photojournal.jpl.nasa.gov/catalog/PIA21942

As the solar wind flows from the sun, it creates a bubble in space known as the heliosphere around our solar system. The heliosphere is the region of space under the influence of our sun.

A good-sized coronal hole came around to where it is just about facing Earth (May 16-18, 2018). Coronal holes are areas of open magnetic field from which solar wind (consisting of charged particles) streams into space. The video clip covers two days and was taken in a wavelength of extreme ultraviolet light. Such streams of particles take several days to reach Earth, but they can generate aurora, particularly nearer the poles. An animation is available at https://photojournal.jpl.nasa.gov/catalog/PIA00575

A substantial coronal hole began to rotate into view over the past few days (Dec. 1-2, 2016). Coronal holes are magnetically open areas of the sun's magnetic field structure that spew streams of high speed solar wind into space. In about a week or so that coronal hole might send streams of particles in the direction of Earth. Often times these streams can interact with Earth's magnetosphere and generate aurora. The images were taken in a wavelength of extreme ultraviolet light. Movies are available at http://photojournal.jpl.nasa.gov/catalog/PIA21208

Technicians conduct integration and testing of NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites during prelaunch operations inside Astrotech Space Operations on Vandenberg Space Force Base in California on Thursday, Jan. 23, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH, along with NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer), a space telescope, will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians conduct integration and testing of NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites during prelaunch operations inside Astrotech Space Operations on Vandenberg Space Force Base in California on Thursday, Jan. 23, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH, along with NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer), a space telescope, will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians use an overheard crane to lift NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) spacecraft onto a work stand for testing operations at the Astrotech Processing Facility on Vandenberg Space Force Base in California on Sunday, Jan. 19, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians use an overheard crane to lift NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) spacecraft onto a work stand for testing operations at the Astrotech Processing Facility on Vandenberg Space Force Base in California on Sunday, Jan. 19, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians use an overheard crane to lift NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) spacecraft onto a work stand for testing operations at the Astrotech Processing Facility on Vandenberg Space Force Base in California on Sunday, Jan. 19, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians conduct testing operations on NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) spacecraft onto a work stand for testing operations at the Astrotech Processing Facility on Vandenberg Space Force Base in California on Sunday, Jan. 19, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians conduct testing operations on NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) spacecraft onto a work stand for testing operations at the Astrotech Processing Facility on Vandenberg Space Force Base in California on Sunday, Jan. 19, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians conduct integration and testing of NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites during prelaunch operations inside Astrotech Space Operations on Vandenberg Space Force Base in California on Thursday, Jan. 23, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH, along with NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer), a space telescope, will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians use an overheard crane to lift NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) spacecraft onto a work stand for testing operations at the Astrotech Processing Facility on Vandenberg Space Force Base in California on Sunday, Jan. 19, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians use an overheard crane to lift NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) spacecraft onto a work stand for testing operations at the Astrotech Processing Facility on Vandenberg Space Force Base in California on Sunday, Jan. 19, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians conduct integration and testing of NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites during prelaunch operations inside Astrotech Space Operations on Vandenberg Space Force Base in California on Thursday, Jan. 23, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH, along with NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer), a space telescope, will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians use an overheard crane to lift NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) spacecraft onto a work stand for testing operations at the Astrotech Processing Facility on Vandenberg Space Force Base in California on Sunday, Jan. 19, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians use an overheard crane to lift NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) spacecraft onto a work stand for testing operations at the Astrotech Processing Facility on Vandenberg Space Force Base in California on Sunday, Jan. 19, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians use an overheard crane to lift NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) spacecraft onto a work stand for testing operations at the Astrotech Processing Facility on Vandenberg Space Force Base in California on Sunday, Jan. 19, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians use an overheard crane to lift NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) spacecraft onto a work stand for testing operations at the Astrotech Processing Facility on Vandenberg Space Force Base in California on Sunday, Jan. 19, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians conduct integration and testing of NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites during prelaunch operations inside Astrotech Space Operations on Vandenberg Space Force Base in California on Thursday, Jan. 23, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH, along with NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer), a space telescope, will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians conduct testing operations on NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) spacecraft onto a work stand for testing operations at the Astrotech Processing Facility on Vandenberg Space Force Base in California on Sunday, Jan. 19, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

Technicians use an overheard crane to lift NASA’s PUNCH (Polarimeter to Unify the Corona and Heliosphere) spacecraft onto a work stand for testing operations at the Astrotech Processing Facility on Vandenberg Space Force Base in California on Sunday, Jan. 19, 2025. PUNCH, consisting of four satellites, will produce continuous 3D images of the solar wind and solar storms as it travels from the Sun to Earth to better understand how material in the corona accelerates to become the solar wind that fills the solar system. PUNCH will launch aboard a SpaceX Falcon 9 rocket in late February 2025.

KENNEDY SPACE CENTER, FLA. - In the NASA Kennedy Space Center’s Payload Hazardous Servicing Facility, technicians are installing the Solar Wind Around Pluto (SWAP) instrument on the New Horizons spacecraft. New Horizons will make the first reconnaissance of Pluto and Charon - a "double planet" and the last planet in our solar system to be visited by spacecraft. The mission will then visit one or more objects in the Kuiper Belt region beyond Neptune. SWAP is a solar wind and plasma spectrometer that measures atmospheric “escape rate” and will observe Pluto’s interaction with the solar wind. New Horizons is scheduled to launch in January 2006, swing past Jupiter for a gravity boost and scientific studies in February or March 2007, and reach Pluto and its moon, Charon, in July 2015.

KENNEDY SPACE CENTER, FLA. - In the NASA Kennedy Space Center’s Payload Hazardous Servicing Facility, technicians are installing the Solar Wind Around Pluto (SWAP) instrument on the New Horizons spacecraft. New Horizons will make the first reconnaissance of Pluto and Charon - a "double planet" and the last planet in our solar system to be visited by spacecraft. The mission will then visit one or more objects in the Kuiper Belt region beyond Neptune. SWAP is a solar wind and plasma spectrometer that measures atmospheric “escape rate” and will observe Pluto’s interaction with the solar wind. New Horizons is scheduled to launch in January 2006, swing past Jupiter for a gravity boost and scientific studies in February or March 2007, and reach Pluto and its moon, Charon, in July 2015.

KENNEDY SPACE CENTER, FLA. - In the NASA Kennedy Space Center’s Payload Hazardous Servicing Facility, technicians work on the Solar Wind Around Pluto (SWAP) instrument that is part of the New Horizons spacecraft. New Horizons will make the first reconnaissance of Pluto and Charon - a "double planet" and the last planet in our solar system to be visited by spacecraft. The mission will then visit one or more objects in the Kuiper Belt region beyond Neptune. SWAP is a solar wind and plasma spectrometer that measures atmospheric “escape rate” and will observe Pluto’s interaction with the solar wind. New Horizons is scheduled to launch in January 2006, swing past Jupiter for a gravity boost and scientific studies in February or March 2007, and reach Pluto and its moon, Charon, in July 2015.

KENNEDY SPACE CENTER, FLA. - In the NASA Kennedy Space Center’s Payload Hazardous Servicing Facility, the Solar Wind Around Pluto (SWAP) instrument is tested after being mounted on the corner of the New Horizons spacecraft. New Horizons will make the first reconnaissance of Pluto and Charon - a "double planet" and the last planet in our solar system to be visited by spacecraft. The mission will then visit one or more objects in the Kuiper Belt region beyond Neptune. SWAP is a solar wind and plasma spectrometer that measures atmospheric “escape rate” and will observe Pluto’s interaction with the solar wind. New Horizons is scheduled to launch in January 2006, swing past Jupiter for a gravity boost and scientific studies in February or March 2007, and reach Pluto and its moon, Charon, in July 2015.

KENNEDY SPACE CENTER, FLA. - In the NASA Kennedy Space Center’s Payload Hazardous Servicing Facility, the Solar Wind Around Pluto (SWAP) instrument has been mounted on the corner of the New Horizons spacecraft. New Horizons will make the first reconnaissance of Pluto and Charon - a "double planet" and the last planet in our solar system to be visited by spacecraft. The mission will then visit one or more objects in the Kuiper Belt region beyond Neptune. SWAP is a solar wind and plasma spectrometer that measures atmospheric “escape rate” and will observe Pluto’s interaction with the solar wind. New Horizons is scheduled to launch in January 2006, swing past Jupiter for a gravity boost and scientific studies in February or March 2007, and reach Pluto and its moon, Charon, in July 2015.

A substantial coronal hole rotated into a position where it is facing Earth (Aug. 9-11, 2017). Coronal holes are areas of open magnetic field that spew out charged particles as solar wind that spreads into space. If that solar wind interacts with our own magnetosphere it can generate aurora. In this view of the sun in extreme ultraviolet light, the coronal hole appears as the dark stretch near the center of the sun. It was the most distinctive feature on the sun over the past week. Movies are available at https://photojournal.jpl.nasa.gov/catalog/PIA21874

The facility for storing and examining Genesis solar wind samples consists of two adjacent laboratories. In these laboratories, the cutting of gold foil to be used in the gathering of the solar wind dust aboard the Genesis spacecraft. Views include: The process of cutting gold foil to be used aboard the Genesis spacecraft. The technicians use Gore-Tex suits with filters as to not contaminate the items.

The first detection of Pluto in X-rays has been made using NASA's Chandra X-ray Observatory in conjunction with observations from NASA's New Horizons spacecraft. As New Horizons approached Pluto in late 2014 and then flew by the planet during the summer of 2015, Chandra obtained data during four separate observations. During each observation, Chandra detected low-energy X-rays from the small planet. The main panel in this graphic is an optical image taken from New Horizons on its approach to Pluto, while the inset shows an image of Pluto in X-rays from Chandra. There is a significant difference in scale between the optical and X-ray images. New Horizons made a close flyby of Pluto but Chandra is located near the Earth, so the level of detail visible in the two images is very different. The Chandra image is 180,000 miles across at the distance of Pluto, but the planet is only 1,500 miles across. Pluto is detected in the X-ray image as a point source, showing the sharpest level of detail available for Chandra or any other X-ray observatory. This means that details over scales that are smaller than the X-ray source cannot be seen here. Detecting X-rays from Pluto is a somewhat surprising result given that Pluto - a cold, rocky world without a magnetic field - has no natural mechanism for emitting X-rays. However, scientists knew from previous observations of comets that the interaction between the gases surrounding such planetary bodies and the solar wind - the constant streams of charged particles from the sun that speed throughout the solar system -- can create X-rays. The researchers were particularly interested in learning more about the interaction between the gases in Pluto's atmosphere and the solar wind. The New Horizon spacecraft carries an instrument designed to measure that activity up-close -- Solar Wind Around Pluto (SWAP) -- and scientists examined that data and proposed that Pluto contains a very mild, close-in bowshock, where the solar wind first "meets" Pluto (similar to a shock wave that forms ahead of a supersonic aircraft) and a small wake or tail behind the planet. The immediate mystery is that Chandra's readings on the brightness of the X-rays are much higher than expected from the solar wind interacting with Pluto's atmosphere. The Chandra detection is also surprising since New Horizons discovered Pluto's atmosphere was much more stable than the rapidly escaping, "comet-like" atmosphere that many scientists expected before the spacecraft flew past in July 2015. In fact, New Horizons found that Pluto's interaction with the solar wind is much more like the interaction of the solar wind with Mars, than with a comet. While Pluto is releasing enough gas from its atmosphere to make the observed X-rays, there isn't enough solar wind flowing directly at Pluto at its great distance from the Sun to make them according to certain theoretical models. There are several suggested possibilities for the enhanced X-ray emission from Pluto. These include a much wider and longer tail of gases trailing Pluto than New Horizons detected using its SWAP instrument. Because Pluto is so small compared to the size of a Chandra point source, scientists may be unable to detect such a tail in X-rays. Other possibilities are that interplanetary magnetic fields are focusing more particles than expected from the solar wind into the region around Pluto, or the low density of the solar wind in the outer solar system at the distance of Pluto could allow for the formation of a doughnut, or torus, of neutral gas centered around Pluto's orbit. It will take deeper and higher resolution images of X-rays from Pluto's environment than we currently have from Chandra to distinguish between these possibilities. http://photojournal.jpl.nasa.gov/catalog/PIA21061

A SpaceX Falcon 9 rocket, carrying NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites, launches from Space Launch Complex 4 East at Vandenberg Space Force Base in California on Tuesday, March 11, 2025. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

A SpaceX Falcon 9 rocket, carrying NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites, is vertical at Space Launch Complex 4 East from Vandenberg Space Force Base in California on Saturday March 8, 2025. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

A SpaceX Falcon 9 rocket, carrying NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites, is vertical at Space Launch Complex 4 East from Vandenberg Space Force Base in California on Saturday March 8, 2025. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

A SpaceX Falcon 9 rocket, carrying NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites, launches from Space Launch Complex 4 East at Vandenberg Space Force Base in California on Tuesday, March 11, 2025. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

Nicholeen Viall, PUNCH Mission Scientist, NASA’s Goddard Flight Center, participates in a science briefing on Tuesday, Feb. 25, 2025, to discuss the upcoming launch of NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites at Vandenberg Space Force Base in California. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

Shawn Domagal-Goldman, acting director, Astrophysics Division, NASA Headquarters, participates in a science briefing on Tuesday, Feb. 25, 2025, to discuss the upcoming launch of NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites at Vandenberg Space Force Base in California. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

A streak lights up the sky as the first stage of a SpaceX Falcon 9 rocket lands at Vandenberg Space Force Base’s Landing Zone 4 in California on Tuesday March 11, 2025, following the launch of NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

A SpaceX Falcon 9 rocket, carrying NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites, is vertical at Space Launch Complex 4 East from Vandenberg Space Force Base in California on Saturday, March 8, 2025. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

Phil Korngut, SPHEREx instrument scientist, Caltech, participates in a science briefing on Tuesday, Feb. 25, 2025, to discuss the upcoming launch of NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites at Vandenberg Space Force Base in California. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

Rachel Akeson, SPHEREx science data center lead, Caltech/IPAC, participates in a science briefing on Tuesday, Feb. 25, 2025, to discuss the upcoming launch of NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites at Vandenberg Space Force Base in California. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

A SpaceX Falcon 9 rocket, carrying NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites, launches from Space Launch Complex 4 East at Vandenberg Space Force Base in California on Tuesday, March 11, 2025. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

A SpaceX Falcon 9 rocket, carrying NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites, is vertical at Space Launch Complex 4 East from Vandenberg Space Force Base in California on Saturday March 8, 2025. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

A SpaceX Falcon 9 rocket, carrying NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites, launches from Space Launch Complex 4 East at Vandenberg Space Force Base in California on Tuesday, March 11, 2025. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

A SpaceX Falcon 9 rocket, carrying NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites, is vertical at Space Launch Complex 4 East from Vandenberg Space Force Base in California on Saturday March 8, 2025. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

A SpaceX Falcon 9 rocket, carrying NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites, launches from Space Launch Complex 4 East at Vandenberg Space Force Base in California on Tuesday, March 11, 2025. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

Alise Fischer, communications, NASA Headquarters participates in a science briefing on Tuesday, Feb. 25, 2025, to discuss the upcoming launch of NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites at Vandenberg Space Force Base in California. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.

A SpaceX Falcon 9 rocket, carrying NASA’s SPHEREx (Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer) observatory and PUNCH (Polarimeter to Unify the Corona and Heliosphere) satellites, is vertical at Space Launch Complex 4 East from Vandenberg Space Force Base in California on Saturday, March 8, 2025. SPHEREx will use its telescope to provide an all-sky spectral survey, creating a 3D map of the entire sky to help scientists investigate the origins of our universe. PUNCH will study origins of the Sun’s outflow of material, or the solar wind, capturing continuous 3D images of the Sun’s corona and the solar wind’s journey into the solar system.