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'''Gliese 581''', also known as '''HO Librae''', is a red dwarf star around 20.4 [[light year|light years]] away.  It is most famous for the discovery of the [[Gliese 581c|first low mass planet within a star's habitable zone]].  In total, four planets have found thus far orbiting the star, two of which may sit within the [[habitable zone]].

'''Gliese 581''', also known as '''HO Librae''', is a red dwarf star around 20.4 [[light year|light years]] away.  It is most famous for the discovery of the [[Gliese 581c|first low mass planet within a star's habitable zone]].  In total, four planets have found thus far orbiting the star, two of which may sit within the [[habitable zone]].

Despite being only 20 light years distant Gliese 581 is invisible to the unaided eye. This is due to Gliese 581 being a red dwarf, and thus dim, with an apparent magnitude of only 10.56.

Despite being only 20 light years distant Gliese 581 is invisible to the unaided eye. This is due to Gliese 581 being a [[red dwarf]], and thus dim, with an apparent magnitude of only 10.56.

==The Star==

==The Star==