World  |  Environment  |  Science & Technology  |  Health  |  Human Rights  |  Feel Good  |  Regions
Great News Network
Spread the word:

Astronomers confirm ‘Earth twin’

December 08, 2011
"For the first time, we can point our telescopes at stars, and know that those stars actually host planetary systems - including at least one that begins to approximate an Earth analogue in the habitable zone around its host star."
- Jill Tarter, the director of the Center for Seti Research at the Seti Institute

Astronomers have confirmed the existence of an Earth-like planet in the 'habitable zone' around a star not unlike our own.

The planet, Kepler 22-b, lies about 600 light-years away and is about 2.4 times the size of Earth, and has a temperature of about 22C.


Kepler 22-b lies 15% closer to its sun than the Earth is to our Sun, and its year takes about 290 days. However, the planet's host star puts out about 25% less light, keeping the planet at its balmy temperature that would support the existence of liquid water.

The Kepler team had to wait for three passes of the planet before upping its status from "candidate" to "confirmed".

Continue reading on BBC article opens in new window 
[Broken link?]


Comment on this story

More Great News

 

Recommendations

About

The Great News Network is meant to supplement your daily news sources - not replace it. It's role is to show that there is hope, people are making a difference, and that a lot of things are getting better.

Optimism is a great catalyst for making the world a better place. When we can see there is hope, then we'll be more compelled to make the effort to do our part.

© 2003-2014 GNN