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Major Discovery! 7 Earth-Size Alien Planets Circle Nearby Star

Wednesday, February 22, 2017 12:04
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(Before It's News)

Exoplanets up to 90 times closer to their star than Earth is to the Sun.

We did know something about this system already, but more work has led to today’s announcement.

Astronomers have never seen anything like this before, says Space.com: Seven Earth-size alien worlds orbit the same tiny, dim star, and all of them may be capable of supporting life as we know it, a new study reports. 

“Looking for life elsewhere, this system is probably our best bet as of today,” study co-author Brice-Olivier Demory, a professor at the Center for Space and Habitability at the University of Bern in Switzerland, said in a statement. 

The exoplanets circle the star TRAPPIST-1, which lies just 39 light-years from Earth — a mere stone’s throw in the cosmic scheme of things. So speculation about the alien worlds’ life-hosting potential should soon be informed by hard data, study team members said.

“We can expect that, within a few years, we will know a lot more about these planets, and with hope, if there is life there, [we will know] within a decade,” co-author Amaury Triaud, of the Institute of Astronomy at the University of Cambridge in England, told reporters on Tuesday (Feb. 21).
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The six inner planets are in near-resonance, meaning their orbital periods are related to each other by a ratio of two small integers. This arrangement suggests that the worlds formed farther out in the system and then migrated in to their current positions, study team members said.

Full report: Major Discovery! 7 Earth-Size Alien Planets Circle Nearby Star | Space.com



Source: https://tallbloke.wordpress.com/2017/02/22/major-discovery-7-earth-size-alien-planets-circle-nearby-star/

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