The slow race of getting NASA’s Space Launch System rocket pieced together for next year’s Artemis II moon mission jumped a ...

Frozen fuel from the SpaceX Falcon 9 rocket created a luminous swirl that lasted for several minutes and could be seen from ...

Frozen fuel from the Falcon 9 rocket launched Monday created a luminous display for several minutes, and was seen by people from England to Eastern Europe.

Fusion has long been the propulsion end-goal for interplanetary travel, and a U.K.-based company thinks on its way to achieving that dream.

It is the single largest element for NASA's Artemis II mission, slated to ferry a crew of astronauts around the far side of ...

Live updates from Monday afternoon's SpaceX NROL-69 mission that launched a Falcon 9 rocket from Cape Canaveral Space Force Station in Florida.

Ukrainian President Volodymyr Zelensky said the new Neptune missile had successfully passed all of its tests and proven ...

Hycean worlds, which are a possible kind of exoplanet with deep oceans surrounded by a thick envelope of hydrogen, could ...

SpaceX has set a rocket re-use record for launch-turnaround by sending a Falcon 9 up twice within nine days early Friday ...

Imagine standing on the red Martian surface, looking up at the sky that feels alien but strangely familiar, with no ...

"There really is something very different about how these giant planets form versus how small planets like Earth form." ...

No matter how many "good signals" there are from Russian-American contacts at the highest level, reality makes far from ...