The glittering stars of Messier 9

Messier 9 can best be described as a globular cluster, a roughly spherical swarm of stars that lies approximately 25,000 light-years from Earth.

Cosmic 'umbilical cord' discovered

Australian astronomers say they've found proof of a vast filament of material that connects our Milky Way galaxy to nearby clusters of galaxies and on to the rest of the universe.

Milky Way is full of alien invaders

Around a quarter of the star clusters in our galaxy sneaked their way in from other galaxies, according to scientists from Swinburne University of Technology in Australia.