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Payload • Jacqueline Feldscher

ULA says modified Vulcan expected to return to flight this summer after SRB/nozzle fixes

United Launch Alliance says a modified Vulcan Centaur is expected to return to flight this summer after fixes addressing a recent anomaly. ULA is accelerating planned margin improvements to the nozzle and solid rocket booster—changes already in development—to implement sooner and restore operational cadence.

2026-03-18T14:40:09.048849-07:00

Space Exploration & Science Missions NASA

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Reuters • Will Dunham

NASA rover detects some of the oldest evidence of water flowing on Mars

By Reuters: Using ground-penetrating radar, NASA's Perseverance rover has detected underground remains of an ancient river delta on Mars in some of the oldest evidence yet obtained showing how water once flowed on the surface of Earth's planetary neighbor.

2026-03-18T15:09:26.934756-07:00

Space Exploration & Science Missions Human Spaceflight & Space Stations NASA

Space.com • Robert Z Pearlman

Meir and Williams complete 7‑hour EVA to prep ISS for new solar arrays — NASA’s first spacewalk in 10 months

By Space.com: Jessica Meir and Chris Williams spent 7 hours and 2 minutes on EVA today (March 18).

Also: NASA

2026-03-18T13:35:29.516201-07:00

FCC Satellite Commercial Space Policy & Regulation

Via Satellite • Rachel Jewett

Ligado Tells FCC That SkyTerra Next Proposal Won’t Cause Interference

By Via Satellite: In a new filing to the FCC, Ligado defended its request to host an L-band payload on AST SpaceMobile satellites, saying the proposal will work within Ligado’s existing L-band coordination agreements and the FCC rules.

2026-03-18T13:20:00.657867-07:00

Satellite Commercial Space

Via Satellite • Rachel Jewett

Satellogic Reveals Merlin Constellation for Daily Global 1‑m Earth‑Observation Mapping

By Via Satellite: Satellogic detailed plans for its next-generation ‘Merlin’ satellites, designed to provide one-meter resolution. The company said that Merlin will be differentiated by its ability to provide daily mapping of the entire planet, with one-meter spatial resolution.

2026-03-18T13:20:00.955353-07:00

Launch Vehicles & Space Transportation Commercial Space

NASA Spaceflight • Bastiaan Vellekoop, Chris Bergin

Starship Booster 19 Completes Initial Pad 2 Test Campaign Ahead of Flight 12

By NASA Spaceflight: Starship Flight 12 took another step toward launch, with Booster 19 completing an initial test….

Also: Space.com, creators.spotify.com and cosmicchroniclesnews.com

2026-03-18T12:18:18.049549-07:00

Satellite LEO Space Exploration & Science Missions NASA

Universe Today • Matthew Williams

NASA’s SPARCS CubeSat Returns First-Light Images, Begins M-dwarf Exoplanet Habitability Campaign

By Universe Today: With the first images from the spacecraft now in hand, the team behind NASA’s Star-Planet Activity Research CubeSat (SPARCS) is ready to begin charting the energetic lives of the galaxy’s most common stars to help answer one of humanity’s most profound questions: Which distant worlds beyond our solar system might be habitable?.

2026-03-18T12:40:41.290441-07:00

Launch Vehicles & Space Transportation Space Exploration & Science Missions Commercial Space

Ars Technica • Eric Berger

Private space firm unveils plan to capture an asteroid using ISS‑tested technology

By Ars Technica: Company has previously tested its technology on the International Space Station.

Also: SpaceNews.com

2026-03-18T12:04:27.561893-07:00

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