The Gliese 581 planetary system is the gravitationally bound system comprising the star Gliese 581 and the objects that orbit it. The system is known to consist of at least three planets discovered using the radial velocity method, along with a debris disk.

Gliese 581d is the third planet discovered around the red dwarf star Gliese 581, which has a mass 0.31 times that of the Sun and is 20.4 light-years from Earth. Gliese 581d orbits its star every 66.64 days at a distance of 32.9 million km (20.5 million miles), which is within the habitable zone.

Oct 25, 2024 · The Gliese 581 planetary system now has four known planets, with masses of about 1.9 (planet e, left in the foreground), 16 (planet b, nearest to the star), 5 (planet c, centre), and 7 Earth-masses (planet d, with the bluish colour).

Gliese 581c / ˈ ɡ l iː z ə / (Gl 581c or GJ 581c) is an exoplanet orbiting within the Gliese 581 system. It is the second planet discovered in the system and the third in order from the star.

Mar 24, 2017 · Gliese 581c is a super-Earth planet that was discovered in 2007. It resides in the Gliese 581 system, which at 20 light-years from Earth is relatively close to our planet (in celestial terms).

Jun 23, 2023 · Gliese 581c orbits Gliese 581, an M-class or red dwarf star cooler than our sun. Due to its cooler temperature, the habitable zone of Gliese 581 is closer in than our own solar system's habitable zone.

May 18, 2011 · Gliese 581d, an exoplanet (planet outside our solar system) seven times the size of Earth, orbits a star called Gliese 581 that is 20 light-years away in the constellation Libra.

May 22, 2011 · Two candidates have already been discarded, but a third planet, Gliese 581d, can be considered the first confirmed exoplanet that could support Earth-like life.

Gliese 581 is an M-class red dwarf star that is not far from the Earth. It is 22 light years away from the Solar system. [1] . This makes it the 89th closest known star to the Sun. [2] It is also known as HO Librae, GL 581, or GJ 581. Astronomers have discovered some planets that orbit Gliese 581.

Sep 29, 2010 · Astronomers have now detected six planets orbiting Gliese 581, the most known to circle any star beyond our own sun. Here's a brief tour of the star and its planets, from the inside out: Gliese...