On Earth, most of us rarely have to think about the signals that keep our internal clocks aligned. The sun rises, daylight ...

Quantum physics is quietly rewriting the rulebook for how far and how fast humanity might travel beyond Earth. A cluster of recent breakthroughs points to a future in which exotic states of matter, ...

There are many difficult things about sending humans to space, from dealing with health effects on the human body to the risks of launch and landing to keeping astronauts well-fed and supplied.

It's common to see images of astronauts on the International Space Station exercising, running on special treadmills and pedaling cycles designed for tight quarters. Besides breaking the monotony of ...

WASHINGTON (Reuters) - The human body was not built for spaceflight, with its microgravity conditions, exposure to high-energy radiation and other issues. As a result, trekking beyond the Earth's ...

Add Yahoo as a preferred source to see more of our stories on Google. A shot of the fully illuminated moon is taken during the Artemis II mission, April 6, 2026. Photo: NASA / Public Domain. (The ...

We’ve known for some time that space affects your muscles and bones. It forces astronauts to run on a treadmill while in space, proving that no matter how far away you are from Earth, you’ll never ...

New research suggests microgravity slows digestion and changes how gut bacteria process food, offering clues to a common problem among astronauts.

On September 28, 2026, SpaceX's massive rocket, Starship, reached Earth orbit for the first time during its 14th launch.