The space agency said Wednesday it was postponing a spacewalk because of a medical concern with an unidentified astronaut.

NASA has spent the last few weeks getting ready for two spacewalks at the International Space Station (ISS), its first in ...

Two NASA astronauts were scheduled to complete a six-and-a-half-hour spacewalk on January 8, but the agency has postponed it ...

Five American astronauts have 10 spacewalks under their belt to date: Bob Behnken, Stephen Bowen, Chris Cassidy, Michael ...

The response came after John Greenewald Jr., an American researcher and ufologist, requested any CIA "assessments, reports, ...

A planned spacewalk outside the International Space Station has been postponed due to a “medical concern” with one of the ...

NASA's SPHEREx telescope unveiled its first full-sky map of the universe, combining more than 100 infrared observations into ...

Another view from Perseverance shows how windswept Mars' landscape truly is.

SLS and the Orion spacecraft are fully stacked together inside NASA’s Vehicle Assembly Building (VAB) at Kennedy Space Center ...

A new video shows the evolution of Kepler's Supernova Remnant using data from NASA's Chandra X-ray Observatory captured over ...

NASA is ramping up work on one large space telescope while also laying the groundwork for future observatories.

On Monday, Congress made good on those promises, releasing a $24.4 billion budget plan for NASA as part of the conferencing ...