Kepler Set to Launch Tonight on Planet Finding Mission

March 6, 2009
Workers attach the two-part payload fairing over the Kepler spacecraft in preparation for launch. The cover, designed to jettison shortly after launch, protects the spacecraft from the friction and turbulence as it speeds through the atmosphere during launch. Image credit: NASA/Jack Pfaller

(PhysOrg.com) -- The Kepler spacecraft and its Delta II rocket are "go" for a launch tonight that is expected to light up the sky along Florida's Space Coast at 10:49 p.m. EST as the rocket lifts off from Launch Complex 17-B at Cape Canaveral Air Force Station. Weather predictions remain good, with a 95 percent chance of favorable conditions at launch time and a temperature of 64 degrees.

The Kepler spacecraft will watch a patch of space for 3.5 years or more for signs of Earth-sized planets moving around stars similar to the sun. The patch that Kepler will watch contains about 100,000 stars like the sun. Using special detectors similar to those used in digital cameras, Kepler will look for slight dimming in the stars as planets pass between the star and Kepler. The Kepler's place in space will allow it to watch the same stars constantly throughout its mission, something observatories like Hubble cannot do.

Here are some quick facts about the Kepler mission:

-- Kepler is the world's first mission with the ability to find true Earth analogs -- planets that orbit stars like our sun in the "habitable zone." The habitable zone is the region around a star where the temperature is just right for water -- an essential ingredient for life as we know it -- to pool on a planet's surface.

-- By the end of Kepler's three-and-one-half-year mission, it will give us a good idea of how common or rare other Earths are in our Milky Way galaxy. This will be an important step in answering the age-old question: Are we alone?

-- Kepler detects planets by looking for periodic dips in the brightness of stars. Some planets pass in front of their stars as seen from our point of view on Earth; when they do, they cause their stars to dim slightly, an event Kepler can see.

-- Kepler has the largest camera ever launched into space, a 95-megapixel array of charge-coupled devices, or CCDs, like those in everyday digital cameras.

-- Kepler's telescope is so powerful that, from its view up in space, it could detect one person in a small town turning off a porch light at night.

Provided by NASA

Explore further: NASA discovers Earth-like planet orbiting 'cousin' of Sun

Related Stories

NASA releases Hubble memorable moments video

July 24, 2015

In celebration of the 25 years since the Hubble Space Telescope's April 1990 launch, NASA is releasing the second in a series of videos showcasing moments in Hubble's history that were memorable for Goddard's engineers and ...

Mini-Neptunes might host life under right conditions

July 23, 2015

M-dwarfs, which are cooler than our sun, have habitable zones closer to the stars. As such, any habitable planets orbiting these stars would transit frequently, making the chances of discovery better.

Recommended for you

'Bathtub rings' suggest Titan's dynamic seas

July 28, 2015

Saturn's moon, Titan, is the only object in the Solar System other than Earth known to have liquid on its surface. While most of the lakes are found around the poles, the dry regions near the equator contain signs of evaporated ...

Born-again planetary nebula

July 28, 2015

Beneath the vivid hues of this eye-shaped cloud, named Abell 78, a tale of stellar life and death is unfolding. At the centre of the nebula, a dying star – not unlike our Sun – which shed its outer layers on its way to ...

3 comments

Adjust slider to filter visible comments by rank

Display comments: newest first

Modernmystic
1 / 5 (1) Mar 06, 2009
We're soon going to have a very good number to plug into the old Drake equation...
Titans
not rated yet Mar 06, 2009
"-- Kepler's telescope is so powerful that, from its view up in space, it could detect one person in a small town turning off a porch light at night."

Maybe it's time to look for the flag on the moon!?
Ashibayai
not rated yet Mar 07, 2009
I wonder how big an area it's looking at and how close those stars are.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.