A pop song by Black Eyed Peas singer Will.i.am will be the first song from earth ever to be broadcast from another planet.
The singer announced on his Twitter feed that his new song 'Reach for the Stars' will be played by NASA's Curiosity rover, which landed on Mars earlier this month.
The song will be played at 7pm BST this evening and will be streamed live from NASA's website and broadcast on NASA TV.
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