Apr 22 2014

Kepler-186f: Potentially Habitable Earth-like Exoplanet Found

didyouknowblog2:

A large team of astronomers has announced the discovery of an Earth-sized exoplanet orbiting within the habitable zone of Kepler-186.

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Artistic concept shows Kepler-186f. Image credit: NASA Ames 

Kepler-186 is a M1-type dwarf star located in the constellation Cygnus, about 500 light years away from Earth.

The star hosts at least five planets, four of which – Kepler-186b, Kepler-186c, Kepler-186d, and Kepler-186e – are in very short-period orbits and are very hot, while the fifth, named Kepler-186f, is in the center of the habitable zone.

Kepler-186f was discovered by the transit method, which detects potential planets as their orbits cross in front of their star and cause a very tiny but periodic dimming of the star’s brightness.

After the team was able to confirm that Kepler-186f was a planet, they used the transit information to calculate the planet’s size.

Kepler-186f is about 1.1 times the radius of the Earth and orbits the star once every 130-days. The astronomers estimate that the planet receives about 1/3 the heat energy that our planet does from the Sun.

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This is an artist’s impression showing the forested surface of Kepler-186f. 

“What makes this finding particularly compelling is that this Earth-sized planet, one of five orbiting this star, which is cooler than the Sun, resides in a temperate region where water could exist in liquid form,” said Dr Elisa Quintana of the SETI Institute and NASA Ames Research Center, the lead author of the paper published in the journal Science.

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Source: Elisa V. Quintana et al. 2014. An Earth-Sized Planet in the Habitable Zone of a Cool Star. Science, vol. 344, no. 6181, pp. 277-280; doi: 10.1126/science.1249403

via didyouknowblog2
Apr 22 2014
mamavalkyrie:

shakerattleandcrescentrolls:

devious-devil:

omnimodus:

apparently the key to happiness is to have a long and shitty winter
and if you can’t have that, surround yourself with deadly wildlife

or maybe these countries have free or reasonably priced health care, good education and costs nothing or very little, marriage equality(not all do however on the list but they at least aren’t extremely homophobic either), decent minimum wages, stable economies, low crime rates and so forth and also deadly wildlife because we protect our environment



Shots fired

mamavalkyrie:

shakerattleandcrescentrolls:

devious-devil:

omnimodus:

apparently the key to happiness is to have a long and shitty winter

and if you can’t have that, surround yourself with deadly wildlife

or maybe these countries have free or reasonably priced health care, good education and costs nothing or very little, marriage equality(not all do however on the list but they at least aren’t extremely homophobic either), decent minimum wages, stable economies, low crime rates and so forth and also deadly wildlife because we protect our environment

Shots fired
via randomfactory
Apr 21 2014
"Someone came up to me and went ‘oh um ah… no’. I thought maybe did they think they would [do him] before and now that they’ve seen me they wouldn’t?"

- Benedict Cumberbatch talking about things fans shouldn’t say to him when they meet him (via elizabeth-bennet)

via cumberbuddy