In the constellation Cygnus, a bright knot of stars seems to adorn one edge of a nearly perfect 20-light-year-wide circle, ...

What does water look like in space? In one word: cool. Check out the latest video from NASA where three astronauts play around with a water bubble they've grown inside the International Space Station.

The universe has a knack for throwing curveballs at astronomers. Just when scientists think they’ve got cosmic mechanics ...

Nasa has unveiled plans to send astronauts to live on the moon - inside glass bubbles made from lunar dust. The American space agency is funding research into the large livable spheres which would be ...

Each lobe of the Fermi bubbles is 25,000 light-years tall. NASA's Goddard Space Flight Center In the center of our galaxy, gigantic, balloon-like structures of high-energy radiation extend thousands ...