2007-05-15 04:15:22 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
it is the 3rd planet away from earth in a different solar system
2007-05-15 04:25:14 · answer #1 · answered by rsanders05 2 · 0⤊ 0⤋
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"Gliese 581 c ... is a "super-earth" extrasolar planet orbiting the red dwarf star Gliese 581.[3] It appears to be the first extrasolar planet discovered in the hypothetical habitable zone surrounding its star, where surface temperatures might maintain liquid water... and therefore be suitable for life as known on Earth. The planet is astronomically close, at 20.5 light years (194 trillion km or 120 trillion miles) from Earth in the direction of the constellation of Libra.[2] Its star is identified as Gliese 581 by its number in the Gliese Catalogue of Nearby Stars; with respect to Earth it is the 87th closest star system"
2007-05-15 11:19:25 · answer #2 · answered by Kris 5 · 1⤊ 0⤋
Gliese: A catalog of stars started by the astronomer by the same name.
581: the 581st star in this catalog, which happens to be a red-dwarf type star.
c: the 3rd discovered planet around said star. NOT the 3rd planet *from* the star, but the 3rd one discovered (in order of time). The planet is thought to be composed of rock, not gas, and is rougly 5 times the mass of the earth, in an orbit very close to the star. Many other things about the planet may be inferred from it's apparent size and location (orbit).
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2007-05-15 11:39:24 · answer #3 · answered by tlbs101 7 · 0⤊ 0⤋
Gliese 581 c is a "super-earth" extrasolar planet orbiting the red dwarf star Gliese 581.
2007-05-15 11:20:37 · answer #4 · answered by gebobs 6 · 0⤊ 0⤋
It is an "M class dwarf star"
2007-05-15 11:18:21 · answer #5 · answered by banjaxed 6 · 0⤊ 2⤋