STS-135 mission coverage


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SpaceX launches first Starship V3
Posted: Sat, May 23 8:37 AM ET (1237 GMT)
Starship Flight 12 liftoff (SpaceX) SpaceX launched the newest version of its Starship vehicle Friday on a suborbital test flight. Starship lifted off from the company’s facility at Starbase, Texas, at 6:30 pm EDT (2230 GMT) on the Flight 12 suborbital mission after problems with the launch tower scrubbed a launch attempt Thursday. The vehicle flew a suborbital flight ending 66 minutes later with a soft splashdown by the Starship upper stage. During the flight both the Starship upper stage and Super Heavy booster suffered engine failures, which for Super Heavy prevented it from making a controlled descent after stage separation. Starship was able to deploy Starlink mass simulators during the suborbital flight. This was the first flight of Starship V3, with extensive upgrades to both stages along with a new launch tower. SpaceX plans to use Starship V3 for orbital missions as soon as later this year.


SpaceX files to go public
Posted: Sat, May 23 8:19 AM ET (1219 GMT)
SpaceX officially filed plans to go public Wednesday, offering details about its finances and long-term ambitions. The company filed paperwork with the Securities and Exchange Commission to go public on the Nasdaq exchange, but did not disclose how many shares it plans to sell or at what price. The filing did provide details about the company's finances, showing it generated $18.7 billion in revenue in 2025 and adjusted EBITDA of $6.6 billion, but a net loss of $4.9 billion. SpaceX divides its business into three segments, called space, connectivity and AI; space includes launch and related services while connectivity includes its Starlink system. Starlink accounted for the majority of its 2025 revenue. SpaceX projected a total addressable market for its services of a whopping $28.5 trillion, a figure dominated by AI, which in turn relies on orbital data centers.


Rocket Lab launches Synspective satellite
Posted: Sat, May 23 8:16 AM ET (1216 GMT)
Rocket Lab also launched a Japanese radar imaging satellite on Friday. An Electron lifted off from the company's New Zealand launch site at 5:...


Isaacman predicts Chinese circumlunar mission in 2027
Posted: Sat, May 23 8:14 AM ET (1214 GMT)
NASA Administrator Jared Isaacman says he expects China to send astronauts around the moon next year. In a speech at the ASCEND conference Tuesday, Isaacman...


Pentagon study recommends new launch site
Posted: Sat, May 23 8:11 AM ET (1211 GMT)
A new Pentagon study recommends development of a launch site for heavy-lift vehicles in addition to the Cape and Vandenberg. Air Force Secretary Troy...





Saturday, May 23
Developing a rocket engine after two years of study
ETH Zurich — 10:16 am ET (1416 GMT)
Prestigious Astronomy Award to be Presented during Conference at MPIA
Max-Planck-Institut — 9:58 am ET (1358 GMT)
Starlab and 1789 Capital Announce Strategic Investment
Voyager Space — 9:33 am ET (1333 GMT)
Buchanan Leads Bill to Ensure American Semiconductor Superiority in Space
US House of Representatives — 9:14 am ET (1314 GMT)
Astronomers Uncover Why Some Solar Eruptions Die
Harvard-Smithsonian Center for Astrophysics — 9:06 am ET (1306 GMT)
Gaze into the Crystal Ball Nebula and See the Light Emitted by a Dying Star 1500 Years Ago
National Optical-Infrared Astronomy Research Laboratory — 8:52 am ET (1252 GMT)





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