A contrail of the NASA F/A-18 research aircraft is seen off the coast of Galveston, performing the quiet supersonic dive maneuver in support of the QSF18 flight series.

A contrail of the NASA F/A-18 research aircraft is seen off the coast of Galveston, performing the quiet supersonic dive maneuver in support of the QSF18 flight series.

A contrail of the NASA F/A-18 research aircraft is seen off the coast of Galveston, performing the quiet supersonic dive maneuver in support of the QSF18 flight series.

A contrail of the NASA F/A-18 research aircraft is seen off the coast of Galveston, performing the quiet supersonic dive maneuver in support of the QSF18 flight series.

Contrails are seen illuminated in the sky as the Sun begins to rise following the launch of a United Launch Alliance Atlas V rocket on the Department of Defense’s Space Test Program 3 (STP-3) mission from Space Launch Complex 41 at Cape Canaveral Space Force Station, Tuesday, Dec. 7, 2021, from NASA’s Kennedy Space Center in Florida. The mission’s Space Test Program Satellite-6 (STPSat-6) spacecraft hosts NASA’s Laser Communications Relay Demonstration (LCRD) and the NASA-U.S. Naval Research Laboratory Ultraviolet Spectro-Coronagraph (UVSC) Pathfinder. Photo Credit: (NASA/Joel Kowsky)

CAPE CANAVERAL, Fla. -- Vapor trails follow space shuttle Endeavour as it approaches Runway 15 on the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida for the final time. A vapor trail, known as a contrail, is a cloud of water vapor that condenses and freezes around the small particles in aircraft exhaust. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kevin O'Connell

CAPE CANAVERAL, Fla. -- Vapor trails follow space shuttle Endeavour as it approaches Runway 15 on the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida for the final time. A vapor trail, known as a contrail, is a cloud of water vapor that condenses and freezes around the small particles in aircraft exhaust. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Kevin O'Connell

CAPE CANAVERAL, Fla. -- A vapor trail follows space shuttle Endeavour as it approaches Runway 15 on the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida for the final time. A vapor trail, known as a contrail, is a cloud of water vapor that condenses and freezes around the small particles in aircraft exhaust. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Chuck Tintera

CAPE CANAVERAL, Fla. -- A vapor trail follows space shuttle Endeavour as it approaches Runway 15 on the Shuttle Landing Facility at NASA's Kennedy Space Center in Florida for the final time. A vapor trail, known as a contrail, is a cloud of water vapor that condenses and freezes around the small particles in aircraft exhaust. Main gear touchdown was at 2:34:51 a.m. EDT, followed by nose gear touchdown at 2:35:04 a.m., and wheelstop at 2:35:36 a.m. On board are STS-134 Commander Mark Kelly, Pilot Greg H. Johnson, and Mission Specialists Mike Fincke, Drew Feustel, Greg Chamitoff and the European Space Agency's Roberto Vittori. STS-134 delivered the Alpha Magnetic Spectrometer-2 (AMS) and the Express Logistics Carrier-3 (ELC-3) to the International Space Station. AMS will help researchers understand the origin of the universe and search for evidence of dark matter, strange matter and antimatter from the station. ELC-3 carried spare parts that will sustain station operations once the shuttles are retired from service. STS-134 was the 25th and final flight for Endeavour, which has spent 299 days in space, orbited Earth 4,671 times and traveled 122,883,151 miles. Photo credit: NASA/Tom Joseph

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

NASA’s DC-8 aircraft from Armstrong Flight Research Center in Edwards, California flies to Everett, Washington to conduct science research about reducing engine particle emissions.  Partners include Boeing, United, General Electric Aerospace, German Aerospace Center (DLR), the FAA, and World Energy.  Boeing’s new passenger aircraft uses revolutionary Sustainable Aviation Fuel, SAF, and NASA’s DC-8 flies behind the Boeing plane to measure its impact throughout flight.  The results of this study will be released publicly to facilitate the improvement of aviation technology worldwide.

There’s more than one way to study the impact of biofuels. For NASA scientists, it means trailing an aircraft from as little as 300 feet behind while flying 34,000 feet in the air. Earlier this year, a NASA-led team conducted a series of carefully choreographed flights over California in order to sniff out how aircraft emissions differ when using petroleum fuels or biofuels. Early results from the Alternative Fuel Effects on Contrails and Cruise Emissions (ACCESS II) experiment confirm that blended biofuel is the cleaner-burning fuel. &quot;Our findings show we definitely see a 50 percent reduction in soot emissions from the DC-8 when it burns the blended fuel as opposed to jet fuel alone,&quot; said Bruce Anderson, ACCESS principal investigator from NASA's Langley Research Center. The DC-8 is a NASA science workhorse: a flying laboratory equipped to collect—or, in this case, produce—data for basic Earth science research. During the ACESS experiment, scientists took advantage of the aircraft's segregated fuel tank. On the fly, the pilot switched the fuel type sent to each of the four engines. The engines burned either jet fuel, or a 50-50 blend of jet fuel and a renewable alternative produced from camelina plant oil. With each change of fuel, three other instrumented aircraft took turns lining up in the DC-8's wake and flying anywhere from 90 meters (300 feet) to more than 30 kilometers (20 miles) behind to catch a sniff. Richard Moore, a post-doctoral fellow at NASA Langley, took this photograph with a DSLR camera on May 7, 2014, during an ACCESS II test flight over Edwards Air Force Base in California. The photo was taken from Langley's HU-25C Guardian jet as it descended toward NASA's Armstrong Flight Research Center after a successful three-hour sampling flight behind the DC-8. The aircraft trailing the DC-8 in the photo was a Falcon 20-E5 jet owned by the German Aerospace Center. The flight on May 7 was just the first in a series of flights that lasted throughout the month. After the campaign, researchers continued to examine the data to determine whether a reduction in soot emissions translates to a reduction in contrail formation, and how that might affect climate. Read more: <a href="http://1.usa.gov/1wBfaKq" rel="nofollow">1.usa.gov/1wBfaKq</a> <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://instagram.com/nasagoddard?vm=grid" rel="nofollow">Instagram</a></b>