Two 'Earth-like' planets discovered in 'habitable zone' around a star in our cosmic backyard
The finds represent the tenth and eleventh planets to be identified by an international collaboration has searched for worlds around nearby stars since 2016.
Discovered in 2003, Teegarden is a red dwarf—a small and relatively cool class of stars—with a mass less than a tenth that of our sun and a surface temperature of nearly 4,900 degrees Fahrenheit. Despite its proximity to Earth in cosmic terms, it was difficult to spot initially due to its dimness. The data that the scientists collected indicated the presence of two planets, slightly bigger than the Earth, orbiting Teegarden in the"habitable zone"—usually defined as the region around a host star within which liquid water, a key component for life as we know it, could exist on the surface.
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