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Military Space
Gen. Douglas Schiess Sworn In as Space Force's Third — and First Four-Star — Chief of Space Operations
Gen. Douglas Schiess became the Space Force's third Chief of Space Operations and first four-star general in a Sept. 3 ceremony at Joint Base Andrews, succeeding Gen. Chance Saltzman.
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Science & Discovery
Without Jupiter's Gravity Assist, NASA Engineers Turn to Solar Electric Propulsion to Reach Uranus
A slipped launch window cost NASA's flagship Uranus mission its Jupiter gravity assist, so a new Planetary Science Journal paper swaps in solar electric propulsion to still reach the ice giant in about 13 years.
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Missions
Dragonfly Gets Its Nervous System, and Its Titan Landing Zone Finally Gets a Name
NASA's nuclear rotorcraft just got 17,315 feet of wiring installed at Johns Hopkins APL, and its 500-mile dune-field landing zone on Titan now has an official name: Ahmakiq Undae.
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Stargazing
NASA's September Skywatching Guide: Venus, the Teapot, and a Harvest Moon
NASA's September 2026 sky guide runs from a modest meteor shower and a string of Moon conjunctions to Venus's peak brilliance, the fall equinox, and a Harvest Moon sharing the evening with Saturn and Neptune.
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Commercial
Rocket Lab's 94th Electron Puts Another Synspective Radar Eye in Orbit
Rocket Lab launched its 94th Electron before dawn on September 3, deploying a Synspective radar satellite in a mission that also doubled as a routine demonstration of the FAA's new unified Part 450 launch licensing rules.
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Science & Discovery
Roman Space Telescope Powers On Its Planet-Imaging Coronagraph
Days after launching on a Falcon Heavy, NASA's Roman Space Telescope switched on its Coronagraph Instrument on September 1, kicking off months of calibration before it attempts to directly image planets around nearby stars.
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Science & Discovery
A Single Flicker Underground: LUX-ZEPLIN's Tantalizing Brush With Dark Matter
Nearly a mile beneath South Dakota, the LZ detector caught one particle recoil it can't explain — a 2.6-sigma whisper of dark matter that's exciting physicists without convincing them.
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Stargazing
September Sky: The Moon Crashes the Pleiades, Then Blots Out Jupiter
A waning gibbous Moon slides past the Pleiades this week, sets up a close pass with Jupiter on Sept. 6, then briefly occults the giant planet on Sept. 8 for skywatchers in Canada, the contiguous U.S., Greenland and Russia.
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Commercial
Sierra Space Books National Security Customers for Dream Chaser's First Flight
Sierra Space says its long-delayed Dream Chaser spaceplane will carry national security, civil and NASA cargo payloads together on one debut flight from Kennedy Space Center to Vandenberg.
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Science & Discovery
BepiColombo Sheds Its Transfer Module, Opening the Riskiest Phase of the Mercury Mission
On Sept. 3, ESA's Mercury Transfer Module separates from BepiColombo's two science orbiters, opening a sequence ESA calls among the most demanding it has ever run before November's orbit insertion.
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Missions
NASA, SpaceX Push Back Crew-13 Launch After Oxidizer Leak Found on Dragon
A propulsion-system oxidizer leak found during routine prelaunch processing has pushed Crew-13's ISS launch off its Sept. 12 target, with no new date set as NASA and SpaceX run tests and review data.
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Military Space
Schiess Confirmed as Third Chief of Space Operations as Saltzman Prepares to Hand Over Command
The Senate confirmed Lt. Gen. Douglas Schiess as the Space Force's third Chief of Space Operations, with a Sept. 3 ceremony at Joint Base Andrews set to formally end Gen. Chance Saltzman's nearly four-year tenure.
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