The planets have been named after their star, with the most earthlike called Gliese c. The team spotted the planet by searching the "habitable zone". This article is more than 14 years old. Donate Join Tickets. California Academy of Sciences. Toggle Close. Search calacademy. Yesterday, NASA announced the exciting news of a potential habitable exoplanet.
To astronomers, a "potentially habitable" planet is one that could sustain life, not necessarily one where humans would thrive. Habitability depends on many factors, but having liquid water and an atmosphere are among the most important. Gliese e is about 0. One astronomical unit, or AU, is the average distance between the Earth and sun, about 93 million miles million km. Astronomers announced this planet's discovery in April , and it's in the running for the lightest known extrasolar planet.
So far, the only potential alien planet less massive than Gliese e is a world about 1. Traveling outward, the next planet is Gliese b, a Neptune-size alien world that's about 16 times as massive as Earth. This planet is still very close to the star, completing an orbit in 5.
Its average distance from the Gliese star is about 0. Gliese c comes next. This is a rocky, smallish planet — about five Earth masses — that makes a full trip around the red dwarf every 15 days. Dark energy. Space probes. Space telescopes.
Astronomy for children. Life The inert and the living Living cell Liquid water Are we alone? Automatic translation. Category: exoplanets Updated June 01, Gliese System. Image: Illustration of the red dwarf Gliese and Gliese g ice planet. The name of the star Gliese refers to the designation Gliese Catalogue, which lists the nearby stars.
Gliese g, an exoplanet in the Libra Kepler 22b, is in a habitable zone Trappist or the harmony of the cosmos Kepler, a telescope that looks life Hundreds of billions of planets Cheops, characteristics of exoplanets Protoplanet around the star HD
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