You can learn a lot from 4.5-billion-year-old rocks.
Can gardens help astronauts go farther?
How much are you willing to pay to become an astronaut?
I is for interstellar.
To gain an edge here on Earth, China is pushing ahead in space
Tiangong-2 will be home to two astronauts for 30 days
Eyes on the skies.
Reflections from a prodigious force in space exploration.
The first time we've caught a baby black hole in action.
Slow but steady sun-powered spacecraft could transform space travel
Astronaut poop could help create a weird yet nutritious bacterial Vegemite.
Would you prefer antiseptic smoke to cedar wood?
Reusing a reusable spacecraft design
Here's how it all began.
A gallery of photos, visualizations, and other pictures of outer space.
A moment of silence
Andromeda in high-def
ESA astronaut Samantha Cristoforetti demonstrates
Are we made of interstellar stuff?
Curators of leftover satellites and stations could be the next hot job