SOFIA lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

Agricultural fields spread out beyond NASA's DC-8 airborne science laboratory as it heads for landing at Air Force Plant 42 in Palmdale, Calif.

NASA's DC-8 airborne science laboratory banks low over the Dryden Aircraft Operations Facility at Air Force Plant 42 in Palmdale, Calif., upon arrival November 8, 2007.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif.

DC-8 lifts off from Air Force Plant 42 in Palmdale, Calif.

SOFIA lifts off from Air Force Plant 42 in Palmdale, Calif., at sunset.

Air Force Plant 42 Fire Department responder Alfonzo Ortega, bottom, hands Doug Mendez a gas meter to test the air in a confined space during an exercise at NASA Armstrong Flight Research Center's Building 703 in Palmdale, California. Dale McCoy, Armstrong confined space co-program manager, observers.

Air Force Plant 42 Fire Department responders Doug Mendez and Alfonzo Ortega test the air in a confined space with a gas meter during an exercise at NASA Armstrong Flight Research Center's Building 703 in Palmdale, California. Dale McCoy, Armstrong confined space co-program manager, observers.

NASA's SOFIA infrared observatory touches down at Air Force Plant 42 in Palmdale, Calif., as it arrives at its new home, the Dryden Aircraft Operations Facility.

NASA’s F-15D research aircraft is positioned behind the X-59 during electromagnetic compatibility testing at U.S. Air Force Plant 42 in Palmdale, California. During this test, the F-15D’s radar and avionics were turned on one at a time while engineers evaluated each signal’s interaction with the X-59 for possible interference. NASA’s Quesst mission will demonstrate quiet supersonic technology that will provide data to help determine an acceptable sound limit in the sky.

U.S. Air Force Plant 42 Fire Department responders carry out the mannequin to an emergency vehicle during an emergency exercise at NASA Armstrong Flight Research Center's Building 703 in Palmdale, California. Responders included, from left, Kent Courter, Doug Mendez, Alfonzo Ortega, Cedric Willis, Tyler Lippens and Ricky Gimmestad.

NASA's DC-8 flying laboratory lifts off the runway at Air Force Plant 42 in Palmdale, Calif., on its first flight in the ARCTAS atmospheric science mission.

The DC-8 aircraft returned to NASA’s Armstrong Flight Research Center Building 703 in Palmdale, California, on April 1, 2024, after completing its final mission supporting Airborne and Satellite Investigation of Asian Air Quality (ASIA-AQ). The aircraft and crew were welcomed back with a celebratory water salute by the U.S. Air Force Plant 42 Fire Department.

The DC-8 aircraft returned to NASA’s Armstrong Flight Research Center Building 703 in Palmdale, California, on April 1, 2024, after completing its final mission supporting Airborne and Satellite Investigation of Asian Air Quality (ASIA-AQ). The aircraft and crew were welcomed back with a celebratory water salute by the U.S. Air Force Plant 42 Fire Department.

NASA’s X-59 quiet supersonic research aircraft is seen at dawn with firetrucks and safety personnel nearby during a hydrazine safety check at U.S. Air Force Plant 42 in Palmdale, California, on Aug. 18, 2025. The operation highlights the extensive precautions built into the aircraft’s safety procedures for a system that serves as a critical safeguard, ensuring the engine can be restarted in flight as the X-59 prepares for its first flight.

Maintainers perform a hydrazine safety check on NASA’s quiet supersonic X-59 aircraft at U.S. Air Force Plant 42 in Palmdale, California, on Aug. 18, 2025. Hydrazine is a highly toxic chemical, but it serves as a critical backup to restart the engine in flight, if necessary, which is one of several safety features being validated ahead of the aircraft’s first flight. 

Maintainers perform a hydrazine safety check on the agency’s quiet supersonic X-59 aircraft at U.S. Air Force Plant 42 in Palmdale, California, on Aug. 18, 2025. Hydrazine is a highly toxic chemical, but it serves as a critical backup to restart the engine in flight, if necessary, and is one of several safety features being validated ahead of the aircraft’s first flight.

NASA’s X-59 quiet supersonic research aircraft taxis across the runway during a low-speed taxi test at U.S. Air Force Plant 42 in Palmdale, California, on July 10, 2025. The test marks the start of taxi tests and the last series of ground tests before first flight.

The Space Shuttle Endeavour, atop NASA's 747 Shuttle Carrier Aircraft (SCA), taking off for the Kennedy Space Center shortly after its landing on 11 October 1994, at Edwards, California, to complete mission STS-68. Endeavour was being ferried from the Kennedy Space Center, Florida, to Air Force Plant 42, Palmdale, California, where it will undergo six months of inspections, modifications, and systems upgrades. The STS-68 11-day mission was devoted to radar imaging of Earth's geological features with the Space Radar Laboratory.

NASA's Super Guppy cargo transport aircraft coming in for landing at Plant 42 in Palmdale, California on April 1, 2019.

NASA’s X-59 quiet supersonic research aircraft taxis across the runway during a low-speed taxi test at U.S. Air Force Plant 42 in Palmdale, California, on July 10, 2025. The test marks the start of taxi tests and the last series of ground tests before first flight.

NASA's 747 Shuttle Carrier Aircraft No. 911, with the space shuttle orbiter Endeavour securely mounted atop its fuselage, taxies to the runway to begin the ferry flight from Rockwell's Plant 42 at Palmdale, California, where the orbiter was built, to the Kennedy Space Center, Florida. At Kennedy, the space vehicle was processed and launched on orbital mission STS-49, which landed at NASA's Ames-Dryden Flight Research Facility (later redesignated Dryden Flight Research Center), Edwards, California, 16 May 1992. NASA 911, the second modified 747 that went into service in November 1990, has special support struts atop the fuselage and internal strengthening to accommodate the added weight of the orbiters.

NASA’s X-59 quiet supersonic research aircraft lifts off for its first flight Tuesday, Oct. 28, 2025, from U.S. Air Force Plant 42 in Palmdale, California. The aircraft’s first flight marks the start of flight testing for NASA’s Quesst mission, the result of years of design, integration, and ground testing and begins a new chapter in NASA’s aeronautics research legacy.

This photo shows a head-on view of NASA's SR-71B, used for pilot proficiency and training, on the ramp at the Air Force's Plant 42 in Palmdale, California, shortly before delivery to the Ames-Dryden Flight Research Facility (later, Dryden Flight Research Center) at Edwards, California. NASA operated two of these unique aircraft, an SR-71A, for high-speed, high altitude research, and this SR- 71B pilot trainer for most of the decade of the 1990s. The "B" model is special because of its raised rear cockpit, which provided a second pilot position so a trainer and an experienced pilot could both see what was going on during flights. The SR-71 was designed and built by the Lockheed Skunk Works, now the Lockheed Martin Skunk Works. Studies have shown that less than 20 percent of the total thrust used to fly at Mach 3 is produced by the basic engine itself. The balance of the total thrust is produced by the unique design of the engine inlet and "moveable spike" system at the front of the engine nacelles, and by the ejector nozzles at the exhaust which burn air compressed in the engine bypass system. Data from the SR-71 high speed research program will be used to aid designers of future supersonic/hypersonic aircraft and propulsion systems, including a high speed civil transport.

NASA’s X-59 quiet supersonic research aircraft lifts off for its first flight Tuesday, Oct. 28, 2025, from U.S. Air Force Plant 42 in Palmdale, California. The aircraft’s first flight marks the start of flight testing for NASA’s Quesst mission, the result of years of design, integration, and ground testing and begins a new chapter in NASA’s aeronautics research legacy.

NASA's Super Guppy cargo transport aircraft taxis in from the Plant 42 runway to NASA"s Armstrong Flight Research Center Building 703 ramp. The aircraft is being stored in the hangar during its phase maintenance check.

NASA’s X-59 quiet supersonic research aircraft lifts off for its first flight Tuesday, Oct. 28, 2025, from U.S. Air Force Plant 42 in Palmdale, California. The aircraft’s first flight marks the start of flight testing for NASA’s Quesst mission, the result of years of design, integration, and ground testing and begins a new chapter in NASA’s aeronautics research legacy.

NASA Administrator Bill Nelson and NASA Deputy Administrator Pam Melroy land at the U.S. Air Force Base Plant 42 in Palmdale, California, near Building 703 on Oct. 12. That building is part of NASA’s Armstrong Flight Research Center in Edwards, California. NASA Armstrong Center Director David McBride, at left, talks to Nelson and Melroy as they begin a tour.

41D-42-023 (30 Aug-5 Sept 1984) --- The Gascoyne River, an intermittent large wash 500 miles north of Perth, Australia, which flows for nearly a thousand miles across the Macadam Plains. The scant water available in this area either is absorbed in the sands and gravel of the watercourse or quickly evaporates. Most water flows beneath the surface, then, giving support to plant root systems and sustaining green vegetation along the watercourses.

NASA's DC-8 airborne science laboratory banks low over Rogers Dry Lake at Edwards Air Force upon its return to NASA Dryden Flight Research Center Nov. 8, 2007.

NASA and Samaritan's Purse DC-8 aircrafts met on the ramp in front of NASA's Armstrong Flight Research Center Building 703.

NASA's DC-8 airborne science laboratory is shadowed by a NASA F/A-18 chase plane during a flyover of the Dryden Aircraft Operations Facility in Palmdale, Calif.

NASA's DC-8 airborne science laboratory soars over the Dryden Flight Research Center upon its return to the center on Nov. 8, 2007.

NASA's DC-8 airborne science laboratory has become the first science aircraft to be based at the Dryden Aircraft Operations Facility in Palmdale, Calif.

NASA and Samaritan's Purse DC-8 aircrafts met on the ramp in front of NASA's Armstrong Flight Research Center Building 703.

NASA and Samaritan's Purse DC-8 aircrafts met on the ramp in front of NASA's Armstrong Flight Research Center Building 703.

NASA's DC-8 airborne science laboratory is shadowed by a NASA F/A-18 chase plane during a flyover of the Dryden Aircraft Operations Facility in Palmdale, Calif.

NASA and Samaritan’s Purse DC-8 aircrafts met on the ramp in front of NASA’s Armstrong Flight Research Center Building 703.

NASA and Samaritan's Purse DC-8 aircrafts met on the ramp in front of NASA's Armstrong Flight Research Center Building 703.

6219: Behind the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 42/43 crewmember Terry Virts of NASA (foreground, left) plants a tree bearing his name in traditional ceremonies Nov. 18. Looking on are crewmates Samantha Cristoforetti of the European Space Agency (center) and Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos, right). In the background are backup crewmembers Kjell Lindgren of NASA, Oleg Kononenko of Roscosmos and Kimiya Yui of the Japan Aerospace Exploration Agency. Virts, Cristoforetti and Shkaplerov will launch Nov. 24, Kazakh time, from the Baikonur Cosmodrome in the Soyuz TMA-15M spacecraft for a 5 ½ month mission on the International Space Station. NASA/Sergei Fyodorov

6174: Behind the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan, Expedition 42/43 crewmember Samantha Cristoforetti of the European Space Agency (center) plants a tree bearing her name in traditional ceremonies Nov. 18. Looking on are crewmates Terry Virts of NASA (left) and Anton Shkaplerov of the Russian Federal Space Agency (Roscosmos, right). In the background are backup crewmembers Oleg Kononenko of Roscosmos and Kimiya Yui of the Japan Aerospace Exploration Agency. Virts, Cristoforetti and Shkaplerov will launch Nov. 24, Kazakh time, from the Baikonur Cosmodrome in the Soyuz TMA-15M spacecraft for a 5 ½ month mission on the International Space Station. NASA/Sergei Fyodorov

The space shuttle Endeavour receives a high-flying salute from its sister shuttle, Columbia, atop NASA's Shuttle Carrier Aircraft, shortly after Endeavor’s landing 11 October 1994, at Edwards, California, to complete mission STS-68. Columbia was being ferried from the Kennedy Space Center, Florida, to Air Force Plant 42, Palmdale, California, where it will undergo six months of inspections, modifications, and systems upgrades. The STS-68 11-day mission was devoted to radar imaging of Earth's geological features with the Space Radar Laboratory. The orbiter is surrounded by equipment and personnel that make up the ground support convoy that services the space vehicles as soon as they land.

NASA's 747 Shuttle Carrier Aircraft No. 911, with the space shuttle orbiter Endeavour securely mounted atop its fuselage, begins the ferry flight from Rockwell's Plant 42 at Palmdale, California, where the orbiter was built, to the Kennedy Space Center, Florida. At Kennedy, the space vehicle was processed and launched on orbital mission STS-49, which landed at NASA's Ames-Dryden Flight Research Facility (later redesignated Dryden Flight Research Center), Edwards, California, 16 May 1992. NASA 911, the second modified 747 that went into service in November 1990, has special support struts atop the fuselage and internal strengthening to accommodate the added weight of the orbiters.

The space shuttle Endeavour receives a high-flying salute from its sister shuttle, Columbia, atop NASA's Shuttle Carrier Aircraft, shortly after Endeavor’s landing 11 October 1994, at Edwards, California, to complete mission STS-68. Columbia was being ferried from the Kennedy Space Center, Florida, to Air Force Plant 42, Palmdale, California, where it will undergo six months of inspections, modifications, and systems upgrades. The STS-68 11-day mission was devoted to radar imaging of Earth's geological features with the Space Radar Laboratory. The orbiter is surrounded by equipment and personnel that make up the ground support convoy that services the space vehicles as soon as they land.

Syd Myers, a NASA Armstrong Flight Research Center confined space supervisor for a drill at NASA Armstrong Flight Research Center’s Building 703 in Palmdale, California, observes U.S. Air Force Plan 42 Fire Department responders extract a mannequin from a confined space as part of an emergency exercise.

A mannequin is used to simulate a worker who has collapsed and come free from a harness intended to extricate the worker in case of emergency as part of a confined spaces training at NASA Armstrong Flight Research Center’s Building 703 in Palmdale, California.

Syd Myers, a NASA Armstrong Flight Research Center confined space supervisor for a drill at NASA Armstrong Flight Research Center’s Building 703 in Palmdale, California, called 9-1-1 to begin the exercise. Myers continued to update responders how the situation was evolving until help arrived.

In this photograph, astronaut Roberta Bondar conducts a life science experiment by using the Biorack Glovebox (GBX) during the International Microgravity Laboratory-1 (IML-1) mission. The Biorack was a large multipurpose facility designed for studying the effects of microgravity and cosmic radiation on numerous small life forms such as cells, tissues, small organisms, and plants. Located at the Biorack, the GBX was an enclosed environment that protected samples from contamination and prevented liquid from escaping. Crewmembers handled the specimens with their hands inside gloves that extended into the sealed work area. A microscope and video camera mounted on the GBX door were used to observe and document experiments. Managed by the Marshall Space Flight Center, the IML-1 mission was the first in a series of Shuttle flights dedicated to fundamental materials and life sciences research and was launched aboard the Shuttle Orbiter Discovery (STS-42) on January 22, 1992.

In this photograph, astronaut David Hilmers conducts a life science experiment by using the Biorack Glovebox (GBX) during the International Microgravity Laboratory-1 (IML-1) mission. The Biorack was a large multipurpose facility designed for studying the effects of microgravity and cosmic radiation on numerous small life forms such as cells, tissues, small organisms, and plants. Located at the Biorack, the GBX was an enclosed environment that protected samples from contamination and prevented liquid from escaping. Crewmembers handled the specimens with their hands inside gloves that extended into the sealed work area. A microscope and video camera mounted on the GBX door were used to observe and document experiments. Managed by the Marshall Space Flight Center, the IML-1 mission was the first in a series of Shuttle flights dedicated to fundamental materials and life sciences research and was launched aboard the Shuttle Orbiter Discovery (STS-42) on January 22, 1992.

17-14-22-37-4: (17 Sept. 2014) --- Assisted by NASA Flight Engineer Barry Wilmore (center) and Soyuz Commander Alexander Samokutyaev of the Russian Federal Space Agency (Roscosmos), right, Expedition 41/42 Flight Engineer Elena Serova of Roscosmos (left) plants a tree at a plot bearing her name behind the Cosmonaut Hotel crew quarters in Baikonur, Kazakhstan Sept. 17 during traditional ceremonies. Wilmore, Serova and Samokutyaev are scheduled to launch from the Baikonur Cosmodrome Sept. 26, Kazakh time, in the Soyuz TMA-14M spacecraft for a 5 ½ month mission on the International Space Station. Serova will become the fourth Russian woman to fly in space and the first Russian woman to live and work on the station. Photo credit: NASA/Victor Zelentsov

A NASA F-15 aircraft sits 20 feet off the left side of the X-59 aircraft, with a white hangar and hills in the background, during electromagnetic interference testing.

A NASA F-15 aircraft sits 20 feet off the left side of the X-59 aircraft, with a white hangar and hills in the background, during electromagnetic interference testing.

NASA’s Armstrong Flight Research Center Director Brad Flick smiles as members of the DC-8 team gather and exchange congratulations after the aircraft and crew return to NASA Armstrong’s Building 703 in Palmdale, California, on April 1, 2024, following the aircraft’s final mission in support of the Airborne and Satellite Investigation of Asian Air Quality (ASIA-AQ).

From left, Wayne Ringelberg, chief pilot at NASA’s Armstrong Flight Research Center in Edwards, California, is welcomed by Michael Thomson, director of NASA Armstrong’s Science Mission Directorate, and Kirsten Boogaard, NASA’s DC-8 project manager, after the DC-8 aircraft and crew return to NASA Armstrong’s Building 703 in Palmdale, California, on April 1, 2024, following the aircraft’s final mission in support of the Airborne and Satellite Investigation of Asian Air Quality (ASIA-AQ).

Walter Klein, DC-8 navigator, exits the aircraft cabin and is welcomed with applause from a supportive team after the DC-8 aircraft and crew return to NASA’s Armstrong Flight Research Center Building 703 in Palmdale, California, on April 1, 2024, following the aircraft’s final mission in support of the Airborne and Satellite Investigation of Asian Air Quality (ASIA-AQ).

NASA DC-8 crew members Nickelle “Nicki” Reid, operations engineer, left, and Isac Mata, engineer technician, exchange in a heartfelt hug after the DC-8 aircraft and crew return to NASA Armstrong’s Building 703 in Palmdale, California, on April 1, 2024, following the aircraft’s final mission in support of the Airborne and Satellite Investigation of Asian Air Quality (ASIA-AQ). Smiling in the background is Michael Thomson, director of NASA Armstrong’s Science Mission Directorate.

The DC-8 aircraft returns to the hangar at NASA’s Armstrong Flight Research Center Building 703 in Palmdale, California, on April 1, 2024, after completing its final mission supporting Airborne and Satellite Investigation of Asian Air Quality (ASIA-AQ).

From left, Andy Barry, DC-8 pilot; Todd Renfro, flight navigator; and Adam Devalon, flight engineer, share smiles after the DC-8 aircraft and crew return to NASA’s Armstrong Flight Research Center Building 703 in Palmdale, California, on April 1, 2024, following the aircraft’s final mission in support of the Airborne and Satellite Investigation of Asian Air Quality (ASIA-AQ).

NASA’s DC-8 operations engineer, Nickelle “Nicki” Reid, left, embraces Katherine Ball, chemical engineering Ph.D. candidate at California Institute of Technology, after the DC-8 aircraft and crew return to NASA Armstrong’s Building 703 in Palmdale, California, on April 1, 2024, following the aircraft’s final mission in support of the Airborne and Satellite Investigation of Asian Air Quality (ASIA-AQ).

A flight crew from NASA's Armstrong Flight Research Center in California prepares to fly NASA's Jet Propulsion Laboratory (JPL) staff on an Armstrong G-III aircraft from California to NASA's Kennedy Space Center in Florida. JPL staff are completing critical work to ensure NASA's Mars 2020 mission is ready on time

Dr. Dwight Peake, NASA’s Armstrong Flight Research Center chief medical officer and flight surgeon, confirms a NASA Jet Propulsion Laboratory (JPL) staff member is ready for flight. The two California NASA centers are working together to fly JPL staff on an Armstrong G-III aircraft from California to NASA’s Kennedy Space Center in Florida. JPL staff are completing critical work to ensure NASA’s Mars 2020 mission is ready on time.

Kelly Jellison, avionics lead, and Tim Sandon, flight engineer, exit the DC-8 aircraft cabin and are welcomed with applause from a supportive team after the DC-8 aircraft and crew return to NASA’s Armstrong Flight Research Center Building 703 in Palmdale, California, on April 1, 2024, following the aircraft’s final mission in support of the Airborne and Satellite Investigation of Asian Air Quality (ASIA-AQ).

An image of the Comet C/2020 F3 NEOWISE (Comet NEOWISE) captured above the tree line of Lone Pine Lake, located on the Mount Whitney Trail in the Eastern Sierra Nevada Mountains in California. The photo was taken at 4:59 am on July 14, 2020. Visiting from the distant parts of the solar system, it’s characterized by a glowing tail and is visible during the month of July. The comet returns  in 6,800 years. 

International Microgravity Laboratory-1 (IML-1) was the first in a series of Shuttle flights dedicated to fundamental materials and life sciences research with the international partners. The participating space agencies included: NASA, the 14-nation European Space Agency (ESA), the Canadian Space Agency (CSA), the French National Center of Space Studies (CNES), the German Space Agency and the German Aerospace Research Establishment (DAR/DLR), and the National Space Development Agency of Japan (NASDA). Dedicated to the study of life and materials sciences in microgravity, the IML missions explored how life forms adapt to weightlessness and investigated how materials behave when processed in space. Both life and materials sciences benefited from the extended periods of microgravity available inside the Spacelab science module in the cargo bay of the Space Shuttle Orbiter. In this photograph, Astronauts Stephen S. Oswald and Norman E. Thagard handle ampoules used in the Mercuric Iodide Crystal Growth (MICG) experiment. Mercury Iodide crystals have practical uses as sensitive x-ray and gamma-ray detectors. In addition to their exceptional electronic properties, these crystals can operate at room temperature rather than at the extremely low temperatures usually required by other materials. Because a bulky cooling system is urnecessary, these crystals could be useful in portable detector devices for nuclear power plant monitoring, natural resource prospecting, biomedical applications in diagnosis and therapy, and astronomical observation. Managed by the Marshall Space Flight Center, IML-1 was launched on January 22, 1992 aboard the Space Shuttle Orbiter Discovery (STS-42 mission).

NASA test pilot Jim Less prepares to exit the cockpit of the quiet supersonic X-59 aircraft in between electromagnetic interference (EMI) testing. The EMI testing ensures an aircraft’s systems function properly under various conditions of electromagnetic radiation. The X-59 is the centerpiece of the NASA’s Quesst mission, designed to demonstrate quiet supersonic technology and provide data to address a key barrier to commercial supersonic travel.

This collage shows some of the most interesting geological sites that NASA's Dawn spacecraft has revealed at dwarf planet Ceres. Images were acquired with the spacecraft's framing camera during various phases of the mission: Survey orbit at a distance of about 2,700 miles (4,400 kilometers); high-altitude mapping orbit (HAMO) at a distance of 915 miles (1,470 kilometers) from Ceres; and low-altitude mapping orbit (LAMO) at an altitude of 240 miles (385 kilometers). In the first row, from left to right: Ceres in shown in false color, roughly centered on Occator Crater, home of the brightest area on Ceres. This picture combines color images obtained by Dawn in its survey orbit. Red corresponds to a wavelength range around 980 nanometers (near infrared), green to a wavelength range around 750 nanometers (red, visible light) and blue to a wavelength range of around 430 nanometers (blue, visible light). This picture illustrates the diversity of terrains on Ceres where the bluish material points to recently emplaced material and the brownish background material is associated with older terrains. Juling Crater (12 miles, 20 kilometers in diameter) as seen in LAMO. Central coordinates are 36 degrees south latitude, 168 degrees east longitude. It is named after the Sakai/Orang Asli (Malaysia) spirit of the crops. This crater displays evidence for the presence of ice -- for example, in the form of a large flow feature seen at the top of the image. Oxo Crater (6 miles, 10 kilometers in diameter) as seen in LAMO. Center coordinates are 42 degrees north latitude, 0 degrees east longitude. It is named after the god of agriculture in Afro-Brazilian beliefs of Yoruba derivation. Oxo hosts the first site at which Dawn detected ice on Ceres, exposed by a landslide. Ahuna Mons is not only a volcano, but also the tallest mountain on Ceres. It is about 2.5 miles (4 kilometers) high and 11 miles (17 kilometers) wide. Center coordinates are 10 degrees south latitude, 316 degrees east longitude. This view combines images obtained in LAMO in blue (430 nanometers), green (750 nanometers) and infrared (980 nanometers) color filters. Ahuna is named after the Sumi tribe (Nagaland, northeastern India) traditional post-harvest thanksgiving festival. Second Row Occator Crater (57 miles, 92 kilometers across) is seen in LAMO images. Center coordinates are 20 degrees north latitude, 239 degrees east longitude. Named after the Roman agricultural deity of the harrowing. This image shows a "Type I" flow feature with a thick "toe" typical of rock glaciers and icy landslides on Earth as viewed in LAMO. The flow feature, found in Ghanan Crater (77 degrees north latitude, 31 degrees east longitude), is one of the most voluminous on Ceres. Enhanced color view of Haulani Crater (21 miles, 34 kilometers in diameter) in color observed in HAMO. Central coordinates: 6 degrees north latitude, 11 degrees east longitude. Named after the Hawaiian plant goddess. Kokopelli Crater (21 miles, 34 kilometers in diameter) seen in LAMO. Central coordinates: 18 degrees north latitude, 125 degrees east longitude. Named after the Pueblo (SW USA) fertility deity, who presides over agriculture. This crater displays a nice arrangement of scarps that likely formed when the crater partly collapsed during its formation. Third Row Central region of Occator Crater, called Cerealia Facula, seen in color. The facula -- or "bright spot" -- is about 9 miles (14 kilometers) in diameter. Center coordinates: 20 N, 240 E. Cerealia refers to the major festival in Ancient Rome that celebrates the grain goddess Ceres (8 days in mid- to late April). The view was produced by combining the highest resolution images of Occator obtained in LAMO (at image scales of 35 meters, or 115 feet, per pixel) with color images obtained in HAMO (at image scales of 135 meters, or about 440 feet, per pixel). The three images used to produce the color were taken using filters centered at 430, 750 and 980 nanometers (the last being slightly beyond the range of human vision, in the near-infrared). North part of Nar Sulcus seen in LAMO. The full feature is about 39 miles (63 km) in length and is located around 42 degrees south latitude, 280 degrees east longitude. Nar is a Azerbaijani festival of pomegranate harvest held in October-November in Goychay city, center of pomegranate cultivation in Azerbaijan. A sulcus is a set of parallel furrows or ridges. Ikapati Crater (31 miles, 50 kilometers in diameter) seen in LAMO. Central coordinates: 34 degrees north latitude, 46 degrees east longitude. Ikapati is named after the Philippine goddess of the cultivated lands. The crater has a smooth floor, probably because heat from the impact that formed Ikapati caused ice in the ground to melt, and then refreeze. This view of Ceres, taken in LAMO, shows an area located at approximately 86 degrees south longitude, 177 degrees east longitude. This part of Ceres, near the south pole, has such long shadows because, from the perspective of this location, the sun is near the horizon. At the time this image was taken, the sun was 4 degrees north of the equator. If you were standing this close to Ceres' south pole, the sun would never get high in the sky during the course of a nine-hour Cerean day. https://photojournal.jpl.nasa.gov/catalog/PIA22090