All articles
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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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Commercial
SpaceX Launches 27 Starlink Satellites on Record-Setting Booster's 35th Flight
A Falcon 9 booster flew for a record 35th time out of Vandenberg early Sept. 2, deploying 27 more Starlink satellites and sticking its droneship landing in the Pacific.
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Military Space
Gravitics' 'Orbital Carrier' Gets Its First Golden Dome Hardware Order, Care of Lockheed Martin
Seattle startup Gravitics has landed a Lockheed Martin subcontract to build three flight-ready Orbital Carriers for the Pentagon's Golden Dome missile-defense architecture, with demos slated for 2027-2028.
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NASA & Agencies
Meir and Adenot Step Outside for U.S. Spacewalk 99, the Sixth All-Female EVA in History
NASA's Jessica Meir and ESA's Sophie Adenot spent 6.5 hours outside the ISS on Sept. 1, 2026, swapping hardware on Harmony and the truss in the sixth all-female spacewalk ever flown.
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Commercial
OHB Wins Nearly €1 Billion to Build IRIS²'s First 18 Satellites as Europe's Sovereign Network Moves to Hardware
Germany's OHB landed a nearly €1 billion SES contract to build all 18 IRIS² medium-Earth-orbit satellites, the first hardware award since the EU's sovereign connectivity program signed its implementation agreement in early August.
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Missions
Roman Space Telescope Launches Toward L2, Kicking Off a Dark-Universe Survey 1,000 Times Faster Than Hubble
NASA's Nancy Grace Roman Space Telescope launched on a Falcon Heavy Aug. 30, 2026, beginning a three-month cruise to L2 where its 300-megapixel camera will survey the sky 1,000x faster than Hubble in search of dark matter, dark energy, and exoplanets.
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Stargazing
September's Sky: A Harvest Moon, Venus at Its Brightest, and the Equinox Arrives Right on Schedule
September 2026 stacks a Moon-Jupiter pairing, Venus's brightest night of the year, a dark New Moon, the precise equinox moment, and a Harvest Moon passing Saturn into one easy month of naked-eye skywatching.
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Missions
The Pentagon Called It Its Most Spectacular Failure. NASA Just Launched the Wreckage Toward the Edge of the Universe — Under the Name of a Woman Astronomy Once Said Didn't Belong
A telescope built in secret to spy on adversaries, abandoned as a half-billion-dollar Cold War-style failure, launched August 30 to hunt dark energy — carrying the name of a woman denied a seat in the field it was denied a role in.
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