Wednesday, February 22, 2017

NASA Found 7 New Planets Where Can Be A Life.

Around 40 light-years away, seven Earth-sized planets have been spotted orbiting closely around a small, ultra-cool star. It’s one of the largest solar systems that’s ever been discovered outside of our own, and it’s a particularly enticing find in the ongoing search for extraterrestrial life. Six of the planets in the system may have the right temperatures for liquid water to exist on their surfaces, and astronomers are confident they’ll be able to get a more in-depth look at these seven worlds with future space telescopes.
The planets, which have been named alphabetically from b to h, all orbit closer to TRAPPIST-1 than Mercury orbits the Sun. The closest planet takes just 1.5 Earth days to complete one orbit, while the farthest planet takes around 20 days to circle the star. Because of this, they’re all a super tight bunch. When TRAPPIST-1f and TRAPPIST-1g are at their closest to one another, they’re just at three times the distance between the Earth and the Moon. So if you were to stand on TRAPPIST-1f, sometimes TRAPPIST-1g would look twice as big as the Moon in the sky. “It’s remarkable that you could see another world right there,” Amaury Triaud, an exoplanet fellow at the Kavli Institute at the University of Cambridge and a study author.
 

source: theverge 

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