Posted on 04/21/2009 3:45:07 PM PDT by americanophile
Great comment, I will have to steal it!
Gliese 581 is a red dwarf sun 20.3 light years away from Earth. This would mean a travel time of over 200 years with an unmanned Orion thermonuclear powered spaceship.
However, if that spaceship had an entangled qubit communications system, effectively creating faster than light communications, it could likewise be used as a deep space Hubble telescope.
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THE GLIESE 581 SOLAR SYSTEMFrom closest in to furthest outPlanet e is 1.9 Earth massesPlanet b is 16 Earth massesPlanet c is 5 Earth massesPlanet d is 7 Earth massesThe first planet to be found is always given the 'b' designation
http://news.bbc.co.uk/2/hi/science/nature/8008683.stm
...Gliese 581 e takes just 3.15 days to orbit its host star... The team now believes planet d (which is about seven Earth-masses in size) circles Gliese 581 in 66.8 days.
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