Watch SpaceX douse a steel plate with water and then blast Raptor engine fire into it. The private spaceflight company's Super Heavy and Starship rockets are powered by 39 total Raptor engines ...

The dual test of engines on the giant Starship and Super Heavy rocket stages at SpaceX's Starbase proving ground in Boca Chica, Texas on Friday comes as the company prepares for its third Starship ...

Astronomers have detected an enormous γ-ray bubble that could be a source of the Milky Way’s most powerful cosmic rays — high-energy particles that rain down on Earth from space. The ...

On Tuesday, Stoke Space announced the firing of its first stage rocket engine for the first time earlier this month, briefly igniting it for about two seconds. The company declared the June 5 test ...

Astronomers have taken a superdetailed, zoomed-in photo of the Large Magellanic Cloud's "behemoth star." The stunning image, which is the first of its kind from outside the Milky Way, shows that ...