Kenneth Chang

Three NASA astronauts and a fourth from the Russian space agency returned to Earth from the International Space Station on Friday morning after weather-related delays.

As chair of the White House’s National Space Council, the vice president largely emphasized continuity with policies set by the Trump administration.

Suni Williams, a Nasa astronaut on the International Space Station , is healthy and not suffering from any medical problems, Nasa's top medical officer said Thursday.

SpaceX's latest test flight of its Starship vehicle on Tuesday got off to a sobering start as the company was unable to recover the enormous booster stage of the rocket, the most powerful ever built.

Bringing Martian rock and soil samples to Earth is among the top priorities of planetary scientists. By studying fresh rocks up close with the latest, most powerful instruments in their laboratories, scientists could unravel mysteries of the red planet’s past, including possibly whether life ever arose there.

The foundational building block for Jeff Bezos' space dreams is finally ready to launch.

The flight is a crucial moment for the company’s vision for space, and a test of whether it may emerge as a serious competitor to Elon Musk and SpaceX.

The successful flight to orbit of the Amazon founder’s powerful rocket suggests it could grow into a credible competitor with Elon Musk’s SpaceX.

The successful flight to orbit of the Amazon founder's powerful rocket suggests it could grow into a credible competitor with Elon Musk's SpaceX.

The seventh test flight of SpaceX's Starship rocket failed on Thursday as the vehicle's upper stage experienced a catastrophic malfunction as it headed upward to space.