Kepler 22-b was one of 54 exoplanet candidates in habitable zones reported by the Kepler team in February, and is just the first to be formally confirmed using other telescopes.
Will the elite go?
More of these "Earth 2.0" candidates are likely to be confirmed in the near future, though a redefinition of the habitable zone’s boundaries has brought that number down to 48. Ten of those are Earth-sized.
The Kepler space telescope was designed to look at a fixed swathe of the night sky, staring intently at about 150,000 stars. The telescope is sensitive enough to see when a planet passes in front of its host star, dimming the star’s light by a minuscule amount.
Kepler identifies these slight changes in starlight as candidate planets, which are then confirmed by further observations by Kepler and other telescopes in orbit and on Earth.
* Stares fixedly at a patch corresponding to 1/400th of the sky
* Looks at more than 155,000 stars
* Has so far found 2,326 candidate planets
* Among them are 207 Earth-sized planets, 10 of which are in the "habitable zone" where liquid water can exist
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".
"Fortune smiled upon us with the detection of this planet," said William Borucki, Kepler principal investigator at Nasa’s Ames Research Center.
"The first transit was captured just three days after we declared the spacecraft operationally ready. We witnessed the defining third transit over the 2010 holiday season."
The results were announced at the Kepler telescope’s first science conference, alongside the staggering number of new candidate planets. The total number of candidates spotted by the telescope is now 2,326 - of which 207 are approximately Earth-sized.
In total, the results suggest that planets ranging from Earth-sized to about four times Earth’s size - so-called "super-Earths" - may be more common than previously thought.
As candidates for planets similar to Earth are confirmed, the Search for Extraterrestrial Intelligence (Seti) has a narrower focus for its ongoing hunt.
"This is a superb opportunity for Seti observations," said Jill Tarter, the director of the Center for Seti Research at the Seti Institute.
"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.
Starbucks Supports Pro-GMO Company 2014 11 26 Another reason why you should not go to Starbucks.
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Group Polarization and the Fad of Ethno-masochism 2014 11 26
From "Group polarization: A critical review and meta-analysis". Journal of Personality and Social Psychology. 6 50 (6): 1141--1151
The psychology of White self hatred. Political correctness IS a mental disorder.
Group polarization: A critical review and meta-analysis.
Isenberg, Daniel J. the paper
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Credo: A Nietzschean Testament by Jonathan Bowden 2014 11 26
This lecture by Jonathan Bowden was given at the 11th New Right meeting in London on September 8, 2007. The original title of the presentation was “The Art and Philosophy of Jonathan Bowden.”
I think ideas are inborn, and you’re attracted, if you have any, toward certain systems of thinking and sensibility and response. From a very young age, I was ...
A Look Back at the OJ Simpson Verdict -- Reactions 2014 11 26
This is a look back at the different reactions to the OJ Simpson verdict some 20 years ago (exact date of verdict was Oct 3, 1995). The OJ Simpson jury consisted of 9 Blacks, 1 Hispanic, and 2 Whites. It would raise eyebrows after they only deliberated for 4 hours in a case that they were involved in for almost ...
New York Times Publishes Darren Wilson’s Street Address and Photo of House #Ferguson 2014 11 26 Hey here are the two @nytimes scumbags that published Wilson’s home address. —> @juliebosman & @campbellnyt— Ben Howe (@BenHowe) November 25, 2014
Michael Brown’s Stepdad Shouting ‘Burn This Bitch Down’
The New York Times published information about the address of Ferguson Police Officer Darren Wilson on Monday in a move that has generated controversy. Tensions are running high in Ferguson, Missouri, as ...