As Elon Musk's SpaceX works toward a May 19 debut of its third-generation Starship, here's a look back at all the previous test flights to date.

Since 2018, astronomers have detected a series of ultra-bright blue explosions known as LFBOTs, some reaching luminosities up to 100 times greater than typical supernovae. One recent event, nicknamed “The Finch,” erupted 3 billion light years away and ...

Through the years since it was first launched, the Hubble Space Telescope has captured stunning photographs of the Cassiopeia A.

Starcloud is a startup that’s racing to build massive data centers in space that supporters say could limit the strain artificial intelligence is placing on terrestrial electric grids. But the fate of Starcloud — and dozens of other space startups ...

Scientists studying ancient Antarctic ice have discovered new evidence that Earth is currently traveling through a cloud of material left behind by long-dead stars. An international research team led by Helmholtz-Zentrum Dresden-Rossendorf found traces of a rare radioactive form of iron called iron-60 in Antarctic ice tens of thousands of years old.

Evidence that Russia is racing to perfect a nuclear-armed spacecraft to target Western satellites is sparking the U.S. and its Allies to strengthen their space defenses.

Space Astronomy Meteoroids Rare 'daytime fireball' meteor creates powerful sonic boom as 7-ton space rock explodes above eastern US A fridge-size space rock spectacularly broke apart over Ohio at 40,000 mph, creating a loud boom and a "fireball" that shone in the bright blue daytime sky. The rare sight, which exploded with the equivalent force of 250 tons of TNT, was also seen from space.

NASA’s Hubble telescope captured an “extraordinarily” rare moment of a comet exploding into fragments, the space agency said. The comet K1, whose full name is C/2025 K1 (ATLAS), was caught fragmenting into at least four pieces between Nov. 8 and Nov ...