March 7, 2009

George H Diller Kennedy Space Center, Fla 321-867-2468 george h diller@nasa gov

J D Harrington Headquarters, Washington 202-358-5241 j d harrington@nasa gov

Michael Mewhinney Ames Research Center, Moffett Field, Calif 650-604-3937 michael s mewhinney@nasa gov

Whitney Clavin Jet Propulsion Laboratory, Pasadena Calif 818-354-4673 whitney clavin@jpl nasa gov

RELEASE: 09-052

NASA'S KEPLER MISSION ROCKETS TO SPACE IN SEARCH OF OTHER EARTHS

CAPE CANAVERAL, Fla -- NASA's Kepler mission successfully launched into space from Cape Canaveral Air Force Station, Fla , aboard a United Launch Alliance Delta II at 10:49 p m EST, Friday Kepler is designed to find the first Earth-size planets orbiting stars at distances where water could pool on the planet's surface Liquid water is believed to be essential for the formation of life

"It was a stunning launch," said Kepler Project Manager James Fanson of NASA's Jet Propulsion Laboratory in Pasadena, Calif "Our team is thrilled to be a part of something so meaningful to the human race -- Kepler will help us understand if our Earth is unique or if others like it are out there "

Engineers acquired a signal from Kepler at 12:11 a m Saturday, after it separated from its spent third-stage rocket and entered its final sun-centered orbit, trailing 950 miles behind Earth The spacecraft is generating its own power from its solar panels

"Kepler now has the perfect place to watch more than 100,000 stars for signs of planets," said William Borucki, the mission's science principal investigator at NASA's Ames Research Center at Moffett Field, Calif Borucki has worked on the mission for 17 years "Everyone is very excited as our dream becomes a reality We are on the verge of learning if other Earths are ubiquitous in the galaxy "

Engineers have begun to check Kepler to ensure it is working properly, a process called "commissioning" that will take about 60 days In about a month or less, NASA will send up commands for Kepler to eject its dust cover and make its first measurements After another month of calibrating Kepler's single instrument, a wide-field charge-couple device camera, the telescope will begin to search for planets

The first planets to roll out on the Kepler "assembly line" are expected to be the portly "hot Jupiters" -- gas giants that circle close and fast around their stars NASA's Hubble and Spitzer space telescopes will be able to follow up with these planets and learn more about their atmospheres Neptune-size planets will most likely be found next, followed by rocky ones as small as Earth The true Earth analogs -- Earth-sized planets orbiting stars like our sun at distances where surface water, and possibly life, could exist -- would take at least three years to discover and confirm Ground-based telescopes also will contribute to the mission by verifying some of the finds

In the end, Kepler will give us our first look at the frequency of Earth-size planets in our Milky Way galaxy, as well as the frequency of Earth-size planets that could theoretically be habitable

"Even if we find no planets like Earth, that by itself would be profound It would indicate that we are probably alone in the galaxy," said Borucki

As the mission progresses, Kepler will drift farther and farther behind Earth in its orbit around the sun NASA's Spitzer Space Telescope, which was launched into the same orbit more than five years ago, is now more than 62 million miles behind Earth

Kepler is a NASA Discovery mission Ames is the home organization of the science principal investigator and is responsible for the ground system development, mission operations and science data analysis JPL manages the Kepler mission development Ball Aerospace & Technologies Corp of Boulder, Colo , is responsible for developing the Kepler flight system and supporting mission operations NASA's Launch Services Program at NASA's Kennedy Space Center, Fla , managed the launch service including payload integration and certifying the Delta II launch vehicle for NASA's use

For more information about the Kepler mission, visit:

http://www nasa gov/kepler

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