24/7 Newsfeed

Put Reason 24/7 on Your Site

RSS

Follow Reason 24/7 on Twitter and via RSS

Earth-Sized Planet Circles Alpha Centauri B

Astronomers have discovered an exoplanet roughly the size of Earth orbiting Alpha Centauri B, the star nearest our sun.

The Alpha Centauri system — composed of three stars orbiting one another — is only 4.4 light-years away, a cosmic stone’s throw from us. Though the newly discovered planet has about the same mass as our own, its orbit is 25 times smaller, so a year on this planet passes in just 3.2 days. This means the planet is sitting up against its star, roasting at perhaps 2,200 degrees Fahrenheit with a surface likely composed of molten lava.

Source: Wired. Read full article. (link)

Editor's Note: We invite comments and request that they be civil and on-topic. We do not moderate or assume any responsibility for comments, which are owned by the readers who post them. Comments do not represent the views of Reason.com or Reason Foundation. We reserve the right to delete any comment for any reason at any time. Report abuses.

advertisement