Gaia: Huge Billion-Star Telescope Launched

The world's most powerful satellite camera has been launched into space aboard a rocket.

Gaia blasts into space on the Soyuz rocket

The £620m observatory lifted off from the Sinnamary launch complex in French Guiana on time at 9.12am (UK time).

The huge telescope is going to map the precise positions and distances to more than a billion stars.

It is hoped that Gaia will give astronomers the first realistic picture of how the Milky Way galaxy is made up.

The observatory's exceptional sensitivity may also detect many thousands of previously unseen celestial objects, including new planets and asteroids.

As many as 50,000 planets outside our solar system could be spotted during the satellite's five-year life.

It will also keep a watch for exploding stars - supernovae - which are rarely observed in real time.

Gaia was aboard the Soyuz rocket which blasted off on time

The European Space Agency (Esa) satellite was sent up on a Soyuz rocket and Gaia was being released from the rocket 40 minutes later.

Gaia has been in development for more than 20 years.

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