Changes on Io around Volund between Voyager 1 and Galileo Second Orbit

Viking Lander 1 Thomas A. Mutch Memorial Station Imaged from Orbit

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

An Orbital Sciences Corporation Antares rocket is seen as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

The trail of an Orbital Sciences Corporation Antares rocket is seen in this two minute exposure as it launches from Pad-0A at NASA's Wallops Flight Facility, Thursday, January 9, 2014, Wallops Island, VA. Antares is carrying the Cygnus spacecraft on a cargo resupply mission to the International Space Station. The Orbital-1 mission is Orbital Sciences' first contracted cargo delivery flight to the space station for NASA. Cygnus is carrying science experiments, crew provisions, spare parts and other hardware to the space station. Photo Credit: (NASA/Bill Ingalls)

This frame from a video details a system of seven planets orbiting TRAPPIST-1, an ultra-cool dwarf star. Spitzer was able to identify a total of seven rocky worlds, including three in the habitable zone where liquid water might be found. A study established the planets' size, distance from their sun and, for some of them, their approximate mass and density. It also established that some, if not all, of these planets are tidally locked, meaning one face of the planet permanently faces their sun. The system has been revealed through observations from NASA's Spitzer Space Telescope and the ground-based TRAPPIST (TRAnsiting Planets and PlanetesImals Small Telescope) telescope, as well as other ground-based observatories. The system was named for the TRAPPIST telescope. A video is available at http://photojournal.jpl.nasa.gov/catalog/PIA21427

No NASA Mars orbiter has been in a position to observe morning daylight on Mars since the twin Viking orbiters of the 1970s. This image, taken by Viking Orbiter 1 on Aug. 17, 1976, shows water-ice clouds in the Valles Marineris area of equatorial Mars.

Changes on Io between Voyager 1 and Galileo Second Orbit Around an Unnamed Vent North of Prometheus

Changes on Io around Maui and Amirani between Voyager 1 and Galileo Second Orbit

PHOTO DATE: 2-28-11 LOCATION: Bldg. 30 south - FCR-1 & Backrooms SUBJECT: STS-133/ULF5 flight controllers on console during EVA 1 with Orbit 1 Shuttle Flight Director Bryan Lunney and Orbit 2 ISS Flight Director Royce Renfrew PHOTOGRAPHER: Lauren Harnett

Installation of 1/3 scale model of space shuttle orbiter into the test section of the Ames 40x80 foot wind tunnel with overhead doors open.

The new era in space flight began on April 12, 1981. That is when the first Space Shuttle mission (STS-1) was launched. The Marshall Space Flight Center developed the propulsion system for the Space Shuttle. This photograph depicts the launch of the Space Shuttle Orbiter Columbia marned with two astronauts, John Young and Robert Crippen.

PHOTO DATE: 02-28-11 LOCATION: Bldg. 30 south SUBJECT: STS-133/ULF5 Flight Controllers on Console - Shuttle Orbit 1 PHOTOGRAPHER: James Blair

PHOTO DATE: 02-28-11 LOCATION: Bldg. 30 south SUBJECT: STS-133/ULF5 Flight Controllers on Console - Shuttle Orbit 1 PHOTOGRAPHER: James Blair

S73-23919 (May 1973) --- An artist's concept illustrating a cutaway view of the Skylab 1 Orbital Workshop (OWS). The OWS is one of the five major components of the Skylab 1 space station cluster which was launched by a Saturn V on May 14, 1973 into Earth orbit. Photo credit: NASA

JSC2006-E-54411 (15 Dec. 2006) --- The members of the STS-116/12A.1 ISS Orbit 1 flight control team pose for a group portrait in the station flight control room of Houston's Mission Control Center (MCC). Flight director Derek Hassman (center right) holds the STS-116 mission logo. Astronaut Terry W. Virts Jr., spacecraft communicator (CAPCOM), is at center. PHALCON flight controller Scott Stover (center left) holds the P5 truss power reconfiguration logo.

Stennis employees at the E-1 Test Stand position an Aerojet AJ26 rocket engine in preparation for a series of early tests. Stennis has partnered with Orbital Sciences Corporation to test the rocket engine for the company's commercial cargo flights to the International Space Station.

Operators at NASA's John C. Stennis Space Center are completing modifications to the E-1 Test Stand to begin testing Aerojet AJ26 rocket engines in early summer of 2010. Modifications include construction of a 27-foot-deep flame deflector trench. The AJ26 rocket engines will be used to power Orbital Sciences Corp.'s Taurus II space vehicles to provide commercial cargo transportation missions to the International Space Station for NASA. Stennis has partnered with Orbital to test all engines for the transport missions.

Operators at NASA's John C. Stennis Space Center are completing modifications to the E-1 Test Stand to begin testing Aerojet AJ26 rocket engines in early summer of 2010. Modifications include construction of a 27-foot-deep flame deflector trench. The AJ26 rocket engines will be used to power Orbital Sciences Corp.'s Taurus II space vehicles to provide commercial cargo transportation missions to the International Space Station for NASA. Stennis has partnered with Orbital to test all engines for the transport missions.

PHOTO DATE: 02/25/11 LOCATION: Bldg. 30 south -WFCR SUBJECT: STS-133/ULF5 Flight Controllers on Console - Orbit Shift 3/1 - Mike Marsh Award PHOTOGRAPHER: GEESEMAN

PHOTO DATE: 02/25/11 LOCATION: Bldg. 30 south -WFCR SUBJECT: STS-133/ULF5 Flight Controllers on Console - Orbit Shift 3/1 - Mike Marsh Award PHOTOGRAPHER: GEESEMAN

PHOTO DATE: 02/25/11 LOCATION: Bldg. 30 south -WFCR SUBJECT: STS-133/ULF5 Flight Controllers on Console - Orbit Shift 3/1 - Mike Marsh Award PHOTOGRAPHER: GEESEMAN

JSC2000-06253 (15 Sept. 2000) --- Flight director Phil Engelauf, front center, and the other fifty-odd flight controllers making up the STS-106 Orbit 1 team, pose for their group portrait in the Flight Control Room of Houston's Mission Control Center.

JSC2010-E-086698 (22 May 2010) --- The members of the STS-132 Orbit 1 flight control team pose for a group portrait in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center. Flight director Mike Sarafin (center) is visible on the front row.

S73-23918 (May 1973) --- An artist's concept illustrating a cutaway view of the Skylab 1 Orbital Workshop (OWS). The OWS is one of the five major components of the Skylab 1 space station cluster which was launched by a Saturn V on May 14, 1973 into Earth orbit. Photo credit: NASA

JSC2010-E-052979 (14 April 2010) --- The members of the STS-131/19A ISS Orbit 1 flight control team pose for a group portrait in the space station flight control room in the Mission Control Center at NASA's Johnson Space Center. Flight director Courtenay McMillan (center) stands on the front row.

JSC2009-E-060959 (20 March 2009) --- The members of the STS-119/15A ISS Orbit 1 flight control team pose for a group portrait in the space station flight control room in the Mission Control Center at NASA’s Johnson Space Center. Flight director Kwatsi Alibaruho (right) is visible on the front row.

STS-133/ULF5 Orbit 1 flight controllers on console during unberth of Permanment Multipurpose Module (PMM) from shuttle. Photo Date: March 1, 2011. Location: Building 30 - WFCR and FCR-1. Photographer: Robert Markowitz.

STS-133/ULF5 Orbit 1 flight controllers on console during unberth of Permanment Multipurpose Module (PMM) from shuttle. Photo Date: March 1, 2011. Location: Building 30 - WFCR and FCR-1. Photographer: Robert Markowitz.

Preparations for a shroud jettison test for the Orbiting Astronomical Observatory-1 (OAO-1) satellite in the Space Power Chambers facility at the National Aeronautics and Space Administration (NASA) Lewis Research Center. The satellite was to be launched on an Atlas-Agena rocket in the spring of 1966. The 3900-pound payload was the heaviest ever attempted by Agena. The satellite was the first of three equipped with powerful telescopes to study ultraviolet data from specific stars and galaxies. In-depth observations were not possible from Earth-bound telescopes because of the filtering and distortion of the atmosphere. The OAO-1 satellite was wider in diameter than the Agena stage, so a new clamshell shroud was created to enclose both the satellite and the Agena. The clamshell shroud consisted of three sections that enclosed both the Agena and OAO-1: a fiberglass nose fairing and aluminum mid and aft fairings. The upper two fairings separated when the Atlas engines stopped, and the aft fairing fell away with the Atlas upon separation from the upper stages The large altitude tank in the Space Power Chambers could simulate altitudes up to 100,000 feet. Three shroud jettison tests were run in July 1965 and the first week of August at a simulated altitude of 20 miles. The April 8, 1966 launch from Cape Canaveral went smoothly, but the OAO-1 satellite failed after only 90 minutes due to a battery failure.

Mars digital-image mosaic merged with color of the MC-1 quadrangle, Mare Boreum region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00161

JSC2007-E-095034 (31 Oct. 2007) --- The members of the STS-120 Orbit 1 flight control team pose for a portrait in the space shuttle flight control room in Houston's Mission Control Center (MCC). Flight director Rick LaBrode (left) and astronaut Chris Ferguson, spacecraft communicator (CAPCOM), hold the STS-120 mission logo.

John C. Stennis Space Center engineers conduct a 55-second test fire of Aerojet's liquid-fuel AJ26 rocket engine that will power the first stage of Orbital Sciences Corporation's Taurus II space launch vehicle. The Dec. 17, 2010 test was conducted on the E-1 Test Stand at Stennis in support of NASA's Commercial Transportation Services partnerships to enable commercial cargo flights to the International Space Station. Orbital is under contract with NASA to provide eight cargo missions to the space station through 2015.

John C. Stennis Space Center engineers conduct a 55-second test fire of Aerojet's liquid-fuel AJ26 rocket engine that will power the first stage of Orbital Sciences Corporation's Taurus II space launch vehicle. The Dec. 17, 2010 test was conducted on the E-1 Test Stand at Stennis in support of NASA's Commercial Transportation Services partnerships to enable commercial cargo flights to the International Space Station. Orbital is under contract with NASA to provide eight cargo missions to the space station through 2015.

S73-27081 (30 May 1973) --- Two of the three Skylab 2 astronauts are seen in the wardroom of the crew quarters of the Orbital Workshop of the Skylab 1 space station cluster in Earth orbit in this reproduction taken from a television transmission made by a TV camera aboard the space station. They are preparing to eat a meal. Astronaut Charles Conrad Jr., commander, is in the right foreground. In the background is astronaut Paul J. Weitz, pilot. Photo credit: NASA

KENNEDY SPACE CENTER, FLA. - The Microgravity Science Laboratory-1 (MSL-1) Spacelab module is installed into the payload bay of the Space Shuttle Orbiter Columbia in Orbiter Processing Facility 1. The Spacelab long crew transfer tunnel that leads from the orbiter's crew airlock to the module is also aboard, as well as the Hitchhiker Cryogenic Flexible Diode (CRYOFD) experiment payload, which is attached to the right side of Columbia's payload bay. During the scheduled 16-day STS-83 mission, the MSL-1 will be used to test some of the hardware, facilities and procedures that are planned for use on the International Space Station while the flight crew conducts combustion, protein crystal growth and materials processing experiments.

KENNEDY SPACE CENTER, FLA. - The Microgravity Science Laboratory-1 (MSL-1) Spacelab module is installed into the payload bay of the Space Shuttle Orbiter Columbia in Orbiter Processing Facility 1. The Spacelab long crew transfer tunnel that leads from the orbiter's crew airlock to the module is also aboard, as well as the Hitchhiker Cryogenic Flexible Diode (CRYOFD) experiment payload, which is attached to the right side of Columbia's payload bay. During the scheduled 16-day STS-83 mission, the MSL-1 will be used to test some of the hardware, facilities and procedures that are planned for use on the International Space Station while the flight crew conducts combustion, protein crystal growth and materials processing experiments.

All seven planets discovered in orbit around the red dwarf star TRAPPIST-1 could easily fit inside the orbit of Mercury, the innermost planet of our solar system. In fact, they would have room to spare. TRAPPIST-1 also is only a fraction of the size of our Sun; it isn't much larger than Jupiter. So, the TRAPPIST-1 system's proportions look more like Jupiter and its moons than those of our solar system. The seven planets of TRAPPIST-1 are all Earth-sized and terrestrial. TRAPPIST-1 is an ultra-cool dwarf star in the constellation Aquarius, and its planets orbit very close to it. https://photojournal.jpl.nasa.gov/catalog/PIA22096

Lake Manicouagan in northern Quebec, Canada, as seen by NASA Terra satellite on June 1, 2001, during Terra orbit 7737.

NASA Administrator Charles Bolden (l) and John C. Stennis Space Center Director Patrick Scheuermann watch the successful test of the first Aerojet AJ26 flight engine Feb. 7, 2011. The test was conducted on the E-1 Test Stand at Stennis. The engine now will be sent to Wallops Flight Facility in Virginia, where it will be used to power the first stage of Orbital Sciences Corporation's Taurus II space vehicle. The Feb. 7 test supports NASA's commitment to partner with companies to provide commercial cargo flights to the International Space Station. NASA has partnered with Orbital to carry out the first of eight cargo missions to the space station in early 2012.

This southerly looking view photographed from the orbiting Space Shuttle Columbia shows a small portion of the vehichle's aft section. The 50-ft Canadian built remote manipulator system (RMS) is in a resting posture (lower right corner) stretched out along the 60-ft. long cargo bay. Many of the components of the OSS-1 payload package are in the bottom center. The Mediterranean Sea is at right foreground. Parts of the Sinai peninsula, Israel, Egypt, Saudi Arabia, Jordan, Palestine, Syria, and Lebanon can be located in the photo. The Red Sea, Gulf of Aqaba, Suez Canal are near the photo's horizon.

PHOTO DATE: 05-13-09 LOCATION: Bldg. 30 south , WFCR & Backrooms SUBJECT: STS-125 Flight Controllers on Console During HST Grapple - Orbit 1 - Bldg. 30 south. Flight Director: Tony Ceccacci PHOTOGRAPHER: JAMES BLAIR

Date: 11-25-09 Location: Bldg. 2S - Rm 122 Press Conference Subject: STS-129 Flight Day 10 Mission Status Briefing with Orbit 1 Flight Director Mike Sarafin. Photographer: Lauren Harnett

JSC2009-E-120813 (20 May 2009) --- The members of the STS-125 Orbit 1 flight control team pose for a group portrait in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center. Flight director Tony Ceccacci holds the STS-125 mission logo.

PHOTO DATE: 22 March 2009 - 3:30pm LOCATION: Bldg. 30, FCR-1 SUBJECT: Team photo of ISS 15A Flight Control Team - Orbit 2 - Flight Director Heather Rarick PHOTOGRAPHER: Bill Stafford

PHOTO DATE: 11-21-08 LOCATION: Bldg. 30 south - MCC SUBJECT: STS-126/ULF2 Orbit 3 flight controllers on console. Cover WFCR, FCR-1 and all the back rooms listed - (Subject) PHOTOGRAPHER:Devin Boldt

PHOTO DATE: 05-13-09 LOCATION: Bldg. 30 south , WFCR & Backrooms SUBJECT: STS-125 Flight Controllers on Console During HST Grapple - Orbit 1 - Bldg. 30 south. Flight Director: Tony Ceccacci PHOTOGRAPHER: JAMES BLAIR

JSC2010-E-050680 (12 April 2010) --- The members of the STS-131 Orbit 1 flight control team pose for a group portrait in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center. Flight director Richard Jones (second left) is on the front row.

Date: 11-25-09 Location: Bldg. 2S - Rm 122 Press Conference Subject: STS-129 Flight Day 10 Mission Status Briefing with Orbit 1 Flight Director Mike Sarafin. Photographer: Lauren Harnett

STS002-12-833 (13 Nov. 1981) --- Clouds over Earth and black sky form the background for this unique photograph from the space shuttle Columbia in Earth orbit. The photograph was shot through the aft flight deck windows viewing the cargo bay. Part of the scientific payload of the Office of Space and Terrestrial Applications (OSTA-1) is visible in the open cargo bay. The astronauts inside Columbia's cabin were remotely operating the Canadian-built remote manipulator system (RMS). Note television cameras on its elbow and wrist pieces. Photo credit: NASA

White walls and scaffolding had become a common sight in the High Bay 1 clean room in JPL's Spacecraft Assembly Facility by the time the Galileo orbiter was being built. This photo from Nov. 1, 1984 shows that gowning requirements had also become more complex. Note the fully-opened high-gain antenna; an emblem on the clean room's Wall of Fame depicts it partially opened, as it was at Jupiter. https://photojournal.jpl.nasa.gov/catalog/PIA23616

This graphic shows the position of the Voyager 1 and Voyager 2 probes, relative to the heliosphere, a protective bubble created by the Sun that extends well past the orbit of Pluto. Voyager 1 crossed the heliopause, or the edge of the heliosphere, in 2012. Voyager 2 is still in the heliosheath, or the outermost part of the heliosphere. https://photojournal.jpl.nasa.gov/catalog/PIA22566

Mars digital-image mosaic merged with color of the MC-24 quadrangle, Phaethontis region of Mars. This image is from NASA Viking Orbiter 1.

Mars digital-image mosaic merged with color of the MC-26 quadrangle, Argyre region of Mars. This image is from NASA Viking Orbiter 1.

Mars digital-image mosaic merged with color of the MC-20 quadrangle, Sinus Sabeus region of Mars. This image is from NASA Viking Orbiter 1.

Mars digital-image mosaic merged with color of the MC-23 quadrangle, Aeolis region of Mars. This image is from NASA Viking Orbiter 1.

Mars digital-image mosaic merged with color of the MC-22 quadrangle, Mare Tyrrhenum region of Mars. This image is from NASA Viking Orbiter 1.

Global atmospheric carbon dioxide concentrations from Oct. 1 through Nov. 11, as recorded by NASA Orbiting Carbon Observatory-2.

These images from NASA Terra satellite are of tropical northern Australia acquired on June 1, 2000 Terra orbit 2413 during the long dry season.

Mars digital-image mosaic merged with color of the MC-29 quadrangle, Eridania region of Mars. This image is from NASA Viking Orbiter 1.

Mars digital-image mosaic merged with color of the MC-28 quadrangle, Hellas region of Mars. This image is from NASA Viking Orbiter 1.

Mars digital-image mosaic merged with color of the MC-25 quadrangle, Thaumasia region of Mars. This image is from NASA Viking Orbiter 1.

Mars digital-image mosaic merged with color of the MC-21 quadrangle, Iapygia region of Mars. This image is from NASA Viking Orbiter 1.

Mars digital-image mosaic merged with color of the MC-27 quadrangle, Noachis region of Mars. This image is from NASA Viking Orbiter 1.

All seven planets discovered in orbit around the red dwarf star TRAPPIST-1 could easily fit inside the orbit of Mercury, the innermost planet of our solar system. In fact, they would have room to spare. TRAPPIST-1 also is only a fraction of the size of our sun; it isn't much larger than Jupiter. So the TRAPPIST-1 system's proportions look more like Jupiter and its moons than those of our solar system. The seven planets of TRAPPIST-1 are all Earth-sized and terrestrial, according to research published in 2017 in the journal Nature. TRAPPIST-1 is an ultra-cool dwarf star in the constellation Aquarius, and its planets orbit very close to it. The system has been revealed through observations from NASA's Spitzer Space Telescope and the ground-based TRAPPIST (TRAnsiting Planets and PlanetesImals Small Telescope) telescope, as well as other ground-based observatories. The system was named for the TRAPPIST telescope. http://photojournal.jpl.nasa.gov/catalog/PIA21428

STS002-13-208 (12-14 Nov. 1981) --- This clear view of the aft section of the Earth-orbiting space shuttle Columbia's cargo bay and some of its cargo was photographed through the flight deck's aft windows. Visible in the center of the photo are the twin orbital maneuvering system (OMS) pods. The vertical stabilizer or tail splits the top part of the image in half. The Induced Environment Contamination Monitor (IECM) Location experiment is located in the back center of the cargo bay, near the top. There is a grapple fixture attached to the side of the IECM. Various components of the Office of Space Terrestrial Applications (OSTA-1) payload are seen near the aft section of the cargo bay, such as the Feature Identification and Location Experiment (FILE) (the long cone shaped object on the right back), the Shuttle Multispectral Infrared Radiometer (SMIRR) (on pallet base) and the SIR-A recorder in the right foreground. In the left foreground the Shuttle Imaging Radar-A (SIR-A) antenna can be seen. Photo credit: NASA

Mars digital-image mosaic merged with color of the MC-12 quadrangle, Arabia region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00172

Mars digital-image mosaic merged with color of the MC-11 quadrangle, Oxia Palus region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00171

Mars digital-image mosaic merged with color of the MC-30 quadrangle, Mare Australe region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00190

Mars digital-image mosaic merged with color of the MC-5 quadrangle, Ismenius Lacus region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00165

Mars digital-image mosaic merged with color of the MC-16 quadrangle, Memnonia region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00176

Mars digital-image mosaic merged with color of the MC-2 quadrangle, Diacria region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00162

Mars digital-image mosaic merged with color of the MC-3 quadrangle, Arcadia region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00163

The lowland plains of Elysium and Utopia Planitiae are separated from the darker heavily cratered highlands by a broad escarpment in this image from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00196

Mars digital-image mosaic merged with color of the MC-17 quadrangle, Phoenicis Lacus region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00177

Mars digital-image mosaic merged with color of the MC-8 quadrangle, Amazonis region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00168

Mars digital-image mosaic merged with color of the MC-10 quadrangle, Lanae Palus region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00170

Mars digital-image mosaic merged with color of the MC-18 quadrangle, Coprates region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00178

Shown here is an oblique view of the polar region, as seen with NASA Viking 1 spacecraft orbiting Mars over latitude 39 degrees north. http://photojournal.jpl.nasa.gov/catalog/PIA00009

The north polar residual ice cap, which is cut by spiral-patterned troughs, is located at the top in this view from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00192

Mars digital-image mosaic merged with color of the MC-13 quadrangle, Syrtis Major region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00173

Mars digital-image mosaic merged with color of the MC-14 quadrangle, Amenthes region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00174

Mars digital-image mosaic merged with color of the MC-6 quadrangle, Casius region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00166

Mars digital-image mosaic merged with color of the MC-7 quadrangle, Cebrenia region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00167

Mars digital-image mosaic merged with color of the MC-9 quadrangle, Tharsis region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00169

Mars digital-image mosaic merged with color of the MC-19 quadrangle, Margaritifer Sinus region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00179

Mars digital-image mosaic merged with color of the MC-4 quadrangle, Mare Acidalium region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00164

Mars digital-image mosaic merged with color of the MC-15 quadrangle, Elysium region of Mars. This image is from NASA's Viking Orbiter 1. http://photojournal.jpl.nasa.gov/catalog/PIA00175

Part of Candor Chasm in Valles Marineris, Mars. Layered terrain is visible in the scene from NASA Viking Orbiter 1, perhaps due to a huge ancient lake. http://photojournal.jpl.nasa.gov/catalog/PIA00199

This illustration shows the position of NASA's Voyager 1 and Voyager 2 probes, outside of the heliosphere, a protective bubble created by the Sun that extends well past the orbit of Pluto. Voyager 1 crossed the heliopause, or the edge of the heliosphere, in August 2012. Heading in a different direction, Voyager 2 crossed another part of the heliopause in November 2018. https://photojournal.jpl.nasa.gov/catalog/PIA22835

This illustration shows the seven Earth-size planets of TRAPPIST-1, an exoplanet system about 40 light-years away, based on data current as of February 2018. The image shows the planets' relative sizes but does not represent their orbits to scale. The art highlights possibilities for how the surfaces of these intriguing worlds might look based on their newly calculated properties. The seven planets of TRAPPIST-1 are all Earth-sized and terrestrial. TRAPPIST-1 is an ultra-cool dwarf star in the constellation Aquarius, and its planets orbit very close to it. In the background, slightly distorted versions the familiar constellations of Orion and Taurus are shown as they would appear from the location of TRAPPIST-1 (courtesy of California Academy of Sciences/Dan Tell). https://photojournal.jpl.nasa.gov/catalog/PIA22097

Color mosaic of Olympus Mons volcano on Mars from the Viking 1 Orbiter. The mosaic was created using images from orbit 735 taken 22 June 1978. Olympus Mons is about 600 km in diameter and the summit caldera is 24 km above the surrounding plains.

Lunar Node-1, an autonomous navigation payload that will change how human explorers safely traverse the Moon’s surface and live and work in lunar orbit, awaits liftoff as part of Intuitive Machines’ IM-1 mission, its first under NASA’s Commercial Lunar Payload Services initiative. LN-1 was developed, built, and tested at NASA’s Marshall Space Flight Center in Huntsville, Alabama.

NASA's Viking Orbiter 1 spies the north polar residual ice cap, which is cut by spiral-patterned troughs and surrounded by the dark lowland plains of Vastitas Borealis, Mars is located at the top. http://photojournal.jpl.nasa.gov/catalog/PIA00197