On May 27, 2009, three astronauts launched to the International Space Station to complete the crew of Expedition 20.

The changes align with a desire that was reflected in the Trump administration's "skinny budget" proposal for NASA, released ...

The European Space Agency’s ACES mission could ultimately pave the way for a global network of atomic clocks that make these ...

The next time astronauts land on the moon, we will watch it in high-definition. The transmission will be in color, digital ...

The first spacewalk was conducted in 1965, by Russian cosmonaut Alexey Leonov. Nearly 20 years later, cosmonaut Svetlana Savitskaya became the first woman to walk in space during a solo outing in 1984 ...

From space, the Atomic Clock Ensemble in Space will link to some of the most accurate clocks on Earth to create a ...

Late this year or early next, NASA will build an addition to the International Space Station, increasing the orbital laboratory’s size from eight rooms to nine. The new room is like no other on ...

The space station had to be raised into a slightly higher ... but there weren't enough medium-size suits. The first women-only spacewalk was by Christina Koch and Jessica Meir.