News tagged Kepler

Cosmic Census Finds Billions of Planets That Could Be Like Earth

"One out of every five sunlike stars in the galaxy has a planet the size of Earth circling it in the Goldilocks zone — not too hot, not too cold — where surface temperatures should be compatible with liquid water, according to a herculean three-year calculation based on data from the Kepler spacecraft by Erik Petigura, a graduate student at the University of …

TAGS: Erik Petigura, Kepler

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Astronomers answer key question: How common are habitable planets?

NASA’s Kepler space telescope, now crippled and its four-year mission at an end, nevertheless provided enough data to answer its main research question: How many of the 200 billion stars in our galaxy have potentially habitable planets?

Based on a statistical analysis of all the Kepler observations, astronomers at UC Berkeley and University of Hawaii, …

TAGS: Erik Petigura, Andrew Howard, Kepler, planets

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Intelligent civilizations rarer than one in a million

"Scientists at UC Berkeley have now used the Green Bank Telescope in West Virginia to look for intelligent radio signals from planets around 86 of these stars. While discovering no telltale signs of life, the researchers calculate that fewer than one in a million stars in the Milky Way Galaxy have planetary civilizations advanced enough to transmit beacons we could detect.

TAGS: SETI, Dan Werthimer, Kepler, planets, Andrew Siemion

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