observe

The largest sample of galaxy groups ever detected has been presented by a team of international astronomers using data from…

A glacier in Antarctica is committing “ice piracy” — stealing ice from a neighbour — in a phenomenon that has…

Crystals — from sugar and table salt to snowflakes and diamonds — don't always grow in a straightforward way. New…

Extreme cosmic events such as colliding black holes or the explosions of stars can cause ripples in spacetime, so-called gravitational…