Search: kepler

SETI and the ‘Long Stare’

August 27, 2010

It’s been a week with an exoplanet focus, what with the interesting Kepler results yesterday and the five, or perhaps seven, planets found around the same star by the HARPS instrument. But I can’t close the week without recourse to Seth Shostak’s recent comments on biological versus machine intelligence. Paul Davies took much the same [...]

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New Kepler Planets in Resonance

August 26, 2010

Somewhere around 2000 light years away in the direction of the constellation Lyra is a Sun-like star orbited by at least two Saturn-class planets. What’s interesting about this news, as just discussed in the Kepler press conference I’ve been listening to this afternoon, is that for the first time we’ve detected and confirmed more than [...]

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HD 10180: A Planetary Harvest

August 25, 2010

In a sense the planets discovered around the Sun-like star HD 10180 are no surprise. We’ve long assumed that planetary systems with numerous planets were common. We lacked the evidence, it’s true, but that could be put down to the limitations of the commonly used radial velocity method, which favors massive worlds close to their [...]

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A Near-Term Read on Life in the Galaxy

August 20, 2010

Although he doesn’t post nearly as often as some of us would like, Caleb Scharf’s Life, Unbounded site is always worth reading. Scharf, author of the textbook Extrasolar Planets and Astrobiology (University Science Books, 2008) is the director of the Columbia University Astrobiology Center. As such, he’s positioned to offer valuable insights into our investigations [...]

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Decadal Survey Pushes WFIRST Telescope

August 18, 2010

What do you get if you combine the insights of nine expert panels, six study groups and a broad survey of the astronomy and astrophysics community? If you’re lucky and have the right committee, you wind up with useful analyses of the readiness and costs of science projects for the future, both major and minor. [...]

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Statites: Hovering Over the Pole

July 29, 2010

Robert Forward’s Indistinguishable from Magic is a genial and absorbing read, a collection of essays and fiction illustrating some of the scientist’s most memorable ideas. And while gigantic lightsails driven by laser beam to other stars always come to mind when Forward’s name is mentioned, it’s fascinating to page through his thoughts on antimatter, black [...]

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Sasselov: Planets ‘Like Earth’ in Kepler Data

July 22, 2010

Dimitar Sasselov, a co-investigator on the Kepler mission, said in a TED Talk just posted that Kepler had uncovered numerous terrestrial planet candidates in its early data. Have a look at the video below (around the 8-minute mark). “Small planets dominate the picture,” says Sasselov, showing a chart of planet candidates. A great deal of [...]

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Notes & Queries 7/19/10

July 19, 2010

WISE Completes First Full Survey The WISE mission completed its first survey of the entire sky on July 17, generating more than a million images, of which one of the most beautiful is surely the image of the Pleiades cluster below. We’re looking in the infrared at a mosaic of several hundred image frames with [...]

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WASP-3c: Implications for Finding Earthlike Planets

July 9, 2010

Learning about planets through inference is a necessary procedure, given the state of our technology. We do have a few direct images of exoplanets now, but when relying on radial velocity data or transits, we’re looking at the effects planets cause upon our measurements of their stars. With CoRoT and Kepler now yielding high-quality transit [...]

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TrES-2b: Pushing Exomoon Limits

July 6, 2010

The planet known as TrES-2b is an interesting and useful place. Just over Jupiter mass, it orbits a solar mass star some 717 light years from Earth, a ‘hot Jupiter’ in a tight 2.47-day orbit. It’s also a transiting planet, discovered by the Trans-Atlantic Exoplanet Survey, which uses small, automated equipment and off-the-shelf technology to [...]

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