Tag: habitable planets

Carbon Dioxide Sucks: It Cooks Our Planet & Makes First Contact Harder

By Kevin Grazier | September 23, 2010 5:35 pm

Planets, in particular habitable planets, are so common in works of science fiction that there’s a tendency to assume that they’d be common in the real Universe. There is little hard data to support that notion–not yet anyway. Just 15 years ago, the only planets astronomers knew where the nine that orbited one star: Sol. (I’m not attempting to promote Pluto-back-to-full-fledged-planethood, but it was considered a planet back then, hence the inclusion.) We have now identified over 490 planets (and counting) orbiting other stars. So although stars with planets seem to be fairly ubiquitous, perhaps even the rule rather than the exception, that still raises the question of the abundance of habitable planets.

other-earth-2

Until recently the detection methods astronomers used for finding extrasolar planets has had a distinct bias–the planets we’ve found tend to be large, Jupiter-like, and close to their parent stars. Now the Kepler spacecraft has just begun its search for extrasolar Earths and, in a very short time, has already found over 700 candidate stars that could have Earth-sized planets. As followup studies examine these candidate stars further, is it only a matter of time until another “Earth” is detected? Certainly, but we may have to sift through a lot of near-misses first.

Read More

CATEGORIZED UNDER: Aliens, Astronomy, Space
NEW ON DISCOVER
OPEN
CITIZEN SCIENCE
ADVERTISEMENT

Discover's Newsletter

Sign up to get the latest science news delivered weekly right to your inbox!

ADVERTISEMENT

See More

ADVERTISEMENT
Collapse bottom bar
+

Login to your Account

X
E-mail address:
Password:
Remember me
Forgot your password?
No problem. Click here to have it e-mailed to you.

Not Registered Yet?

Register now for FREE. Registration only takes a few minutes to complete. Register now »