Space

The unilateral moratorium on anti-satellite tests is meant to establish an international norm — and rebuke Russia.

A SpaceX Dragon capsule carrying the four crewmembers of the Ax-1 mission splashed down off the coast of Florida today (April 25), bringing the groundbreaking flight to a close.

Mercury is now visible soon after sunset in the west-north-western sky.

Scientists restarted the Large Hadron Collider on April 22 to hunt for dark matter and fringe physics.

With persistent high winds off the Florida coast, SpaceX on Saturday again waved off the undocking and return to Earth of a Dragon crew capsule from the International Space Station with four private astronauts. The decision delays the Axiom crew’s departure until no earlier than Sunday night, with splashdown Monday […]

On this episode of This Week in Space, look at NASA’s plans to land humans on the Red Planet from the Apollo era through today, SpaceX, too.

Helios’ new large and extremely powerful binoculars are like twin light-buckets that give wide and deep views of the night sky, but does their design match their optical capability? Steve Ringwood finds out.

SpaceX launched 53 more Starlink satellites Thursday from Cape Canaveral, growing the company’s commercial internet network while ground teams seek to increase the already-blistering pace of Falcon 9 rocket missions.

Guitar legend Joe Satriani is well known for his sci-fi thematics and his “Crystal Planet” comic, and his new record, “The Elephants of Mars,” continues the trend.

The return of the yearly April Lyrids meteor shower is very welcome for meteor observers, breaking the roughly 15-week hiatus since the maximum of the Quadrantids meteor shower on 3 January.