The American space agency NASA has launched a new telescope its mission: to probe the farthest corners of our galaxy to look for planets like The Earth.
The telescope, named Kepler, blasted off aboard a Delta rocket from Cape Canaveral in Florida.
Space scientists say they would be astonished if they did not find a planet similar to Earth.
Once in position following The Earth around the sun Kepler, which is named after a seventeenth century astronomer, will turn its gaze on an area containing more than 4 milion stars.
Planets located in a so-called warm zone – known as the habitable zone – might host liquid water on their surfaces.
And where there is liquid water, scientists argue, there is at least the potential for life.
Finding Earth-like planets is one thing – proving there is life is another and Nasa says once one has been located it could take another three years to prove ET lives or lived there.
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