A group of astronomers has estimated the number of habitable planets in our galaxy for the first time.
Astronomers have identified a mysterious group of 20 sun-sized stars travelling at high speed.
The European probe has embarked on an ambitious 5-year mission to map our own galaxy, the Milky Way.
A powerful supernova in a distant galaxy has produced the largest gamma ray burst ever detected.
An international team of astronomers has detected a galaxy that is 30 billion light years away.
How long would it take an alien civilization to explore the whole galaxy using automated probes?
Astronomers have indentified an unprecedented number of black holes in the Andromeda galaxy.
In a world first, dung beetles are thought to use our own Milky Way galaxy to orient themselves.
Recent discoveries have indicated the likelihood that our own galaxy is teeming with planets.
How likely is it that we will find an advanced alien civilization within our own Milky Way galaxy ?
The Hubble Space Telescope has photographed a galaxy that is 13.3 billion light years away.
A spiral galaxy dating back to just 3 billion years after the Big Bang has been photographed by Hubble.
A team of astronomers from Japan believe they've observed a galaxy that is 12.91 billion years old.
NASA astronomers have announced that the nearest galaxy is on a collision course with our own.
Planck mission photographs are helping to shed light on the star formations that make up our galaxy.
If mankind were to develop interstellar space travel, where in the galaxy should we go first ?
Scientists discover that dark matter may play a leading role in the formation of galaxies.
Data from NASA's Kepler telescope suggests there are 50 billion planets in the Milky Way.
The invisible 'Galaxy X' is thought to contain an overwhelming amount of dark matter.
For the first time scientists have observed a planet that originated outside our own galaxy.