Southern African Large Telescope
Trip Start Jul 19, 2012
69Trip End Ongoing
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A place like Betelgeuse, a star in Orion is so far away that even though we can see the light it may no longer be there. It is 640 light years from earth and a light year is how far light travels in a year.
Light travels 300,000 km per second so in a year it goes
300,000 x 60 x 60 x 24 x 365 = 9,460,800,000,000 km
Ford Prefect and Zaphod Beeblebrox from The Hitchhikers Guide to the Galaxy come from a planet somewhere in the vicinity of Betelgeuse.