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NASA’sΒ X-59 Reaches Speed,Β Altitude for Future Quiet Supersonic Flights

12 June 2026 at 20:35
The X-59 in flight on June 12, 2026 against a blue sky.
NASA’s X-59 quiet supersonic research aircraft reached its target speed and altitude for future community overflights for the first time during a flight on Friday, June 12, 2026. The milestone marked the first time the aircraft flew at Mach 1.4 and 55,000 feet β€” conditions it will fly when gathering community response data to its quiet sonic thump.
NASA/Lori Losey

NASA’s X-59Β experimentalΒ aircraftΒ reached a major milestoneΒ Friday, JuneΒ 12,Β flyingΒ Mach 1.4 (about 924 mph) and an altitude of 55,000 feet,Β theΒ conditions requiredΒ forΒ theΒ aircraftΒ to make future flights critical to its mission.Β Β 

TheΒ X-59Β still has months ofΒ performance testing ahead, but after those are complete, NASA’s Quesst mission will fly the aircraft over several U.S. communities to collect dataΒ on publicΒ perceptionΒ of theΒ quiet sonic thumpΒ itΒ will make at supersonic speeds.Β Those community overflights willΒ include flightsΒ at Mach 1.4 and 55,000 feet.Β 

The milestone comes just days after the X-59’s first supersonic flight.Β That flight showed theΒ aircraft performed as expected at Mach 1.1, butΒ Friday’sΒ missionΒ conditions flightΒ was anΒ even more critical step for NASA.Β 

TheΒ aircraft’sΒ team has steadily expanded theΒ aircraft’sΒ flight envelopeΒ byΒ evaluating its performanceΒ at aΒ variety of speedsΒ andΒ altitudes,Β and having its pilots take on aΒ battery ofΒ maneuvers.Β Β 

Photo of the XVS screen on the X-59 showing Mach 1.4 at 55,030 was achieved.
NASA’s X‑59 eXternal Vision System (XVS) shows Mach 1.4 at 55,030 feet on Friday, June 12, 2026 during the aircraft’s first mission conditions flight, the approximate conditions it will fly when gathering community response data to its quiet β€œsonic thump.” The milestone marks the first time the aircraft flew at its designed speed and altitude.
NASA/Lori Losey

The X-59 was designed to fly supersonic without causing a loud sonic boom.Β However, for these early supersonic flights it has been accompanied by a NASA F-15 researchΒ aircraft, a traditional supersonic jet that causes booms obscuring any noise the X-59 makes. During upcoming flights, a shock-sensing probe mounted to the F-15 will gatherΒ measurements of the X-59’s shock wave signature, an early measure of its supersonic performance.Β 

After the team conducts more tests at a variety of altitudes and conditions to complete envelope expansion, the X-59 will enterΒ theΒ acoustic validation phaseΒ ofΒ Quesst.Β During this phase, researchers willΒ thoroughlyΒ measureΒ the aircraft’s supersonicΒ acousticΒ signatureΒ β€” the quiet thumpΒ it’sΒ designed to make β€”Β toΒ confirm itΒ is performing as intended.Β 

Each flightΒ bringsΒ NASAΒ one step closer to flyingΒ the X-59Β over communities and gathering feedback that could help shape the future of commercial supersonic flight over land.Β 

More X-59 to Explore

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Read more on the Quesst mission page.

The post NASA’sΒ X-59 Reaches Speed,Β Altitude for Future Quiet Supersonic Flights appeared first on NASA Science.

NASA’s X-59 Flies SupersonicΒ for First TimeΒ 

9 June 2026 at 00:17

NASA’s X-59 quiet supersonic research aircraft flies above the clouds during its first supersonic flight. The aircraft is shown in side profile during level flight with desert and mountain terrain visible below.
NASA’s X-59 quiet supersonic research aircraft completed its first supersonic flight Friday, June 5,β€―2026, marking the first time the aircraft exceeded the speed of sound in support of NASA’s Quesst mission. The milestone represents a major step in flight testing as the aircraft expands into the supersonic portion of its flight envelope.
NASA/Lori Losey

NASA’sΒ X-59Β experimentalΒ aircraftΒ reachedΒ a major milestoneΒ Friday, June 5,Β when itΒ flewΒ faster than the speed of soundΒ for the first time.Β Β 

TheΒ 81-minute flightΒ achieved a speedΒ ofΒ MachΒ 1.1Β (approximatelyΒ 713Β mph)Β at an altitude ofΒ 43,400Β feet,Β with the X-59 performing asΒ expected.Β ForΒ NASA test pilotΒ Jim β€œClue” Less,Β theΒ plane’s instruments were the only indication of flying supersonicΒ β€”Β exactlyΒ what the team wanted.Β 

β€œYou know you are supersonic when gauges say you are supersonic.Β IΒ didn’tΒ feel anything,” Less said.Β β€œIt went smoothly,Β and we easily got to Mach 1.1.” 

The X-59 is designed to fly at supersonic speeds while creating only a quiet thump instead of a loud sonic boom. For this flight, aΒ NASA F‑15 chase plane flew nearby toΒ monitorΒ theΒ test. ItsΒ loud sonic booms obscured any sound made by the X-59.Β TheΒ X-59Β will conduct flights focused onΒ its sound profileΒ during a later phase of testing.Β 

Now that the X-59 has officially kicked off supersonic flight tests, the next big step is its first mission conditions flight. During this test, the X-59 will fly atΒ the same speed and altitude planned forΒ future tests, where the aircraft will fly over several U.S.Β communities to gather data from peopleΒ on the groundΒ about its noise levels: Mach 1.4 (925 mph)Β atΒ 55,000 feet.Β Β 

β€œThe plane wants to go faster, and we are looking forward to that,” Less said.Β 

The X-59Β is the centerpiece ofΒ NASA’sΒ QuesstΒ mission,Β which aims toΒ demonstrateΒ quieterΒ supersonic flight and to help enable commercial supersonic flight over land.β€―Β 

This flight was also the first time the X‑59 appeared in NASA’sΒ flightΒ tracker.

More X-59 to Explore

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Read more on the Quesst mission page.

The post NASA’s X-59 Flies SupersonicΒ for First TimeΒ  appeared first on NASA Science.

SpaceX just launched β€” and landed β€” a Falcon 9 rocket booster for the 35th time. That's a new record. (video)

A SpaceX Falcon 9 rocket carrying 29 Starlink satellites lifted off from the Cape Canaveral Space Force Station in Florida on Monday, June 8, 2026. The first stage booster flew for a record 35th time.

NASA’sΒ X-59Β AircraftΒ Flies Supersonic for First Time

5 June 2026 at 21:44

4 min read

NASA’sΒ X-59Β AircraftΒ Flies Supersonic for First Time

NASA’s X 59 eXternal Vision System digital display shows green flight data overlaid on the forward scenery as the aircraft flies supersonic. Numerical indicators, horizon references, and a Mach number readout are visible on the screen.
NASA’s X 59 eXternal Vision System shows Machβ€―1.077 on Friday, June 5,β€―2026, marking the aircraft’s first time reaching supersonic speed in support of NASA’s Quesst mission. The moment represents a milestone for the aircraft as it transitions to include test flights faster than the speed of sound.
NASA

NASA’sΒ experimentalΒ X-59Β aircraftΒ markedΒ a major milestoneΒ Friday,Β JuneΒ 5,Β when itΒ flew faster than the speed of sound for the first time,Β setting the stage forΒ demonstratingΒ its quiet supersonic capabilitiesΒ later this year.Β 

NASA test pilot Jim β€œClue” LessΒ took offΒ and landedΒ at Edwards Air Force BaseΒ in California, reaching a top speed ofΒ approximatelyΒ MachΒ 1.1Β (713Β mph)Β and altitude ofΒ 43,400 feet.Β TheΒ X-59’sΒ flight began atΒ 11:08Β a.m.Β PDTΒ and lasted 81Β minutes,Β withΒ the team focusing on flying qualitiesΒ atΒ both subsonic and then supersonic speeds.Β Β 

In the coming days, we expect to take the next step and push to Mach 1.4

jared isaacman

jared isaacman

NASA Administrator

”X-59 is getting ready for its quiet supersonic debut. Since the aircraft’s first flight on Oct. 28, 2025, the team has made tremendous progress,Β flyingΒ 16Β timesΒ in the last 90 days and getting into a steady test rhythm. In the coming days, we expect to take the next step and push to Mach 1.4,” said NASA Administrator Jared Isaacman β€œI’m grateful to the NASA team and Lockheed Martin Skunk Works for their help getting us to this point, and I hope this is the first of many collaborations as we rebuild NASA’s X-plane portfolio.” 

The X-59 is designed to flyΒ atΒ supersonicΒ speedsΒ while creating only a quiet thump instead of a loud sonic boom.Β For this flight, aΒ NASA F‑15 chase plane flew nearby toΒ monitorΒ the X‑59.Β TheΒ loud sonic booms fromΒ the F-15Β obscuredΒ any sound made by the X-59.Β Β 

β€œThe X-59’s first supersonic flight is a testament to America’s enduring leadership in science, engineering, and aerospace innovation,” said Michael Kratsios,Β Assistant to the President for Science and Technology and Director of the Office of Science and Technology Policy.Β β€œThis achievement comes as the Trump Administration continues work to unleash supersonic flight and enable American ingenuity.” 

ThisΒ first supersonicΒ flight isΒ aΒ significantΒ milestone, butΒ anΒ eventΒ evenΒ more critical toΒ the mission is upcoming. In just days, theΒ aircraftΒ is expected to makeΒ its firstΒ β€œmission conditions” flight, reaching aΒ cruising speed of Mach 1.4 (925 mph) and altitude of approximately 55,000 feet. The X-59Β alsoΒ will beΒ accompanied by a chase planeΒ for this flight.Β Β 

NASA’s X-59 quiet supersonic research aircraft flies above the clouds during its first supersonic flight. The aircraft is shown in side profile during level flight with desert and mountain terrain visible below.
NASA’s X-59 quiet supersonic research aircraft completed its first supersonic flight Friday, June 5,β€―2026, marking the first time the aircraft exceeded the speed of sound in support of NASA’s Quesst mission. The milestone represents a major step in flight testing as the aircraft expands into the supersonic portion of its flight envelope.
NASA / Lori Losey

ThisΒ speed andΒ altitudeΒ areΒ theΒ baseΒ conditions for the X-59 when it will eventually fly over several U.S. communities enabling NASA to gather data about how peopleΒ mayΒ perceive itsΒ quiet thump.Β NASA will share this dataΒ with U.S. and international regulators to helpΒ establishΒ newΒ data-driven noise standardsΒ toΒ enable a futureΒ viableΒ market forΒ supersonic commercial flight over land.Β 

For the last several months, theΒ X-59Β has beenΒ participatingΒ in an ongoing series of flights where the plane has beenΒ flying at a wide range of speeds and altitudes – a process known as envelope expansion.Β These tests are the firstΒ phase of the X-59’s flight testing. They areΒ focused on performanceΒ and involve chase plane monitoring.Β WhenΒ theΒ aircraftΒ completes thisΒ phaseΒ it will enter another,Β focused on its sound profileΒ in orderΒ toΒ verifyΒ its quietΒ thump capability.Β Β 

The X-59 is the centerpiece of NASA’sΒ Quesst mission, which aims toΒ demonstrateΒ quiet supersonic flightΒ and help enable commercial supersonic flight over land worldwide.Β These advancements will helpΒ travelersΒ reach their preferred destinations faster,Β spending less time in the air.Β 

ThroughΒ Quesst’sΒ development of the X-59, NASAΒ alsoΒ willΒ deliver design tools and technology for quiet supersonic airliners that will achieve the high speedsΒ desiredΒ by commercial operators withoutΒ disturbingΒ people on the ground. NASA willΒ validateΒ design tools through ground and flight testing,Β providingΒ U.S.Β aircraftΒ manufacturers the ability to explore new quiet supersonic concepts,Β andΒ provide them withΒ confidence that their resultingΒ designsΒ will meetΒ quiet flightΒ requirements.Β Β 

quesst-logo-horizontal-051826sm

Read more about NASA’s Quesst mission and the X-59.

The post NASA’sΒ X-59Β AircraftΒ Flies Supersonic for First Time appeared first on NASA Science.

NASA’sΒ X-59Β AircraftΒ Flies Supersonic for First Time

5 June 2026 at 21:44

4 min read

Preparations for Next Moonwalk Simulations Underway (and Underwater)

NASA’s X 59 eXternal Vision System digital display shows green flight data overlaid on the forward scenery as the aircraft flies supersonic. Numerical indicators, horizon references, and a Mach number readout are visible on the screen.
NASA’s X-59 eXternal Vision System shows Machβ€―1.077 on Friday, June 5,β€―2026, marking the aircraft’s first time reaching supersonic speed in support of NASA’s Quesst mission. The moment represents a milestone for the aircraft as it transitions to include test flights faster than the speed of sound.

NASA

NASA’sΒ experimentalΒ X-59Β aircraftΒ markedΒ a major milestoneΒ Friday,Β JuneΒ 5,Β when itΒ flew faster than the speed of sound for the first time,Β setting the stage forΒ demonstratingΒ its quiet supersonic capabilitiesΒ later this year.Β 

NASA test pilot Jim β€œClue” LessΒ took offΒ and landedΒ at Edwards Air Force BaseΒ in California, reaching a top speed ofΒ approximatelyΒ MachΒ 1.1Β (713Β mph)Β and altitude ofΒ 43,400 feet.Β TheΒ X-59’sΒ flight began atΒ 11:08Β a.m.Β PDTΒ and lasted 81Β minutes,Β withΒ the team focusing on flying qualitiesΒ atΒ both subsonic and then supersonic speeds.Β Β 

In the coming days, we expect to take the next step and push to Mach 1.4

jared isaacman

jared isaacman

NASA Administrator

”X-59 is getting ready for its quiet supersonic debut. Since the aircraft’s first flight on Oct. 28, 2025, the team has made tremendous progress,Β flyingΒ 16Β timesΒ in the last 90 days and getting into a steady test rhythm. In the coming days, we expect to take the next step and push to Mach 1.4,” said NASA Administrator Jared Isaacman β€œI’m grateful to the NASA team and Lockheed Martin Skunk Works for their help getting us to this point, and I hope this is the first of many collaborations as we rebuild NASA’s X-plane portfolio.” 

The X-59 is designed to flyΒ atΒ supersonicΒ speedsΒ while creating only a quiet thump instead of a loud sonic boom.Β For this flight, aΒ NASA F‑15 chase plane flew nearby toΒ monitorΒ the X‑59.Β TheΒ loud sonic booms fromΒ the F-15Β obscuredΒ any sound made by the X-59.Β Β 

β€œThe X-59’s first supersonic flight is a testament to America’s enduring leadership in science, engineering, and aerospace innovation,” said Michael Kratsios,Β Assistant to the President for Science and Technology and Director of the Office of Science and Technology Policy.Β β€œThis achievement comes as the Trump Administration continues work to unleash supersonic flight and enable American ingenuity.” 

ThisΒ first supersonicΒ flight isΒ aΒ significantΒ milestone, butΒ anΒ eventΒ evenΒ more critical toΒ the mission is upcoming. In just days, theΒ aircraftΒ is expected to makeΒ its firstΒ β€œmission conditions” flight, reaching aΒ cruising speed of Mach 1.4 (925 mph) and altitude of approximately 55,000 feet. The X-59Β alsoΒ will beΒ accompanied by a chase planeΒ for this flight.Β Β 

NASA’s X-59 quiet supersonic research aircraft flies above the clouds during its first supersonic flight. The aircraft is shown in side profile during level flight with desert and mountain terrain visible below.
NASA’s X-59 quiet supersonic research aircraft completed its first supersonic flight Friday, June 5,β€―2026, marking the first time the aircraft exceeded the speed of sound in support of NASA’s Quesst mission. The milestone represents a major step in flight testing as the aircraft expands into the supersonic portion of its flight envelope.
NASA / Lori Losey

ThisΒ speed andΒ altitudeΒ areΒ theΒ baseΒ conditions for the X-59 when it will eventually fly over several U.S. communities enabling NASA to gather data about how peopleΒ mayΒ perceive itsΒ quiet thump.Β NASA will share this dataΒ with U.S. and international regulators to helpΒ establishΒ newΒ data-driven noise standardsΒ toΒ enable a futureΒ viableΒ market forΒ supersonic commercial flight over land.Β 

For the last several months, theΒ X-59Β has beenΒ participatingΒ in an ongoing series of flights where the plane has beenΒ flying at a wide range of speeds and altitudes – a process known as envelope expansion.Β These tests are the firstΒ phase of the X-59’s flight testing. They areΒ focused on performanceΒ and involve chase plane monitoring.Β WhenΒ theΒ aircraftΒ completes thisΒ phaseΒ it will enter another,Β focused on its sound profileΒ in orderΒ toΒ verifyΒ its quietΒ thump capability.Β Β 

The X-59 is the centerpiece of NASA’sΒ Quesst mission, which aims toΒ demonstrateΒ quiet supersonic flightΒ and help enable commercial supersonic flight over land worldwide.Β These advancements will helpΒ travelersΒ reach their preferred destinations faster,Β spending less time in the air.Β 

ThroughΒ Quesst’sΒ development of the X-59, NASAΒ alsoΒ willΒ deliver design tools and technology for quiet supersonic airliners that will achieve the high speedsΒ desiredΒ by commercial operators withoutΒ disturbingΒ people on the ground. NASA willΒ validateΒ design tools through ground and flight testing,Β providingΒ U.S.Β aircraftΒ manufacturers the ability to explore new quiet supersonic concepts,Β andΒ provide them withΒ confidence that their resultingΒ designsΒ will meetΒ quiet flightΒ requirements.Β Β 

quesst-logo-horizontal-051826sm

Read more about NASA’s Quesst mission and the X-59.

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NASA’s X-59 quiet supersonic research aircraft completed its first supersonic flight Friday, June 5,β€―2026, marking the first time the aircraft exceeded the s...

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The post End of an Era: The Retirement of the American AV-8B Harrier II appeared first on AERONAUT.media.

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