Thursday, March 5, 2009

Finding the 'Goldilocks Zone' Is No Fairytale

In less than 24 hours, NASA will launch the Kepler science satellite to find planets just like ours in a small patch of universe not so far far away.

Scanning starlight is Kepler’s task as its camera looks for signs of Earth-like planets “like a flea on a headlight,” according to today’s article by CBS News Space Consultant (and resident Trekkie) William Harwood.

With approximately 200 billion stars in our galaxy, this might take a while, right? But no. We’ll have a report in about 3.5 Earth years.

In that time, our tax dollars at work will let us know how many planets are in the “Goldilocks Zone.” That means not too hot, not too cold, but just right. Okay, no one expects to find three bears or any porridge. There’s a limit to how far NASA can stretch a fairytale.

Where We’re Looking
The real estate we earthlings are looking at is a desirable location near "the left wing of Cygnus the Swan, midway between the stars Deneb and Vega."

I know exactly where that is . . . It’s a commuter’s dream -- between 600 and 3,000 light years away. Let’s see, at warp speed, I think that’s less than an hour and much less traffic than my current commute around the Beltway.

To quote from the article:

"The habitable zone is where we think water will be," said William Borucki, Kepler principal investigator at NASA's Ames Research Center.

"If you can find liquid water on the surface, we think we may very well find life there. So that zone is not too close to the star, because it's too hot and the water boils. Not too far away where the water's condensed and ice-covered, a planet covered with glaciers. It's the goldilocks zone, not too hot, not too cold, just right for life."

Johannes Kepler was a 17th century astronomer. He figured out the laws of planetary motion. NASA's 21st century Kepler “weighs 2,320 pounds and measures 15.3 feet from top to bottom.”

We’ll see what this new Kepler figures out . . . the amazing thing is that results come back in 2012. The end of the Mayan calendar . . . a little spooky, but we can handle it.

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Thank you for commenting! I appreciate it. I'll get back to you as soon as I can! Peace, Meredith