NASA announced Earth 2.0: Kepler-452b


NASA finds ‘Earth-like’ planet in ‘habitable zone’

NASA's Kepler mission has confirmed the first near-Earth-size planet in the “habitable zone” around a sun-like star. This discovery and the introduction of 11 other new small habitable zone candidate planets mark another milestone in the journey to finding another “Earth.”

National Aeronautics and Space Administration (NASA) labelled the new discovery "Earth 2.0" after describing it as our planet's "bigger cousin".

Kepler-452b is its more technical name. It was named after the telescope that spotted it, the Kepler space telescope.

Announced on July 23, 2015, planet Kepler-452b is larger than Earth and orbits a star nearly identical to the sun, but older and therefore hotter. The planet's orbit is nearly the same as Earth's, and its year is about 20 days longer than Earth's. Kepler-452b is 1,400 light-years away.

"This is the first possibly rocky, habitable planet around a solar-type star," Jeff Coughlin, Kepler research scientist at the Search for Extraterrestrial Intelligence (SETI) Institute in Mountain View, California, said during a news briefing.

Kepler is about 60 percent wider than Earth, which gives it a "better than even" chance of being rocky, researchers said. The planet is probably about five times more massive than our own, making it a so-called "super Earth." It likely possesses a thick atmosphere, lots of water and active volcanoes.

The exoplanet completes one orbit every 385 days, so its year is only slightly longer than Earth's. And Kepler-452b circles a sun-like star that's just 10 percent bigger and 20 percent brighter than the one that hangs in Earth's sky.

But Kepler-452b's star appears to be considerably older than the sun — 6 billion years, compared to 4.5 billion years.

The findings have been accepted for publication in The Astronomical Journal.

For more information about the Kepler mission, visit:

Sources:, BBC




XOLXOL: NASA announced Earth 2.0: Kepler-452b
NASA announced Earth 2.0: Kepler-452b
NASA finds ‘Earth-like’ planet in ‘habitable zone’
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