Monday, February 02, 2009

HOT WORLD

Al Gore needs to help solve this extreme case of Global Warming!




Astronomers have found a planet with a galactic case

of hot flashes.

In just six hours, this planet four times the size of

Jupiter heats up by more than 1,200 degrees,

according to a study published in Thursday's issue of

the journal Nature.

"It's the first observation of changing weather" on a

planet outside our solar system, said study author

Gregory Laughlin, an astronomy professor at the

University of California at Santa Cruz.

He used NASA's Spitzer Space Telescope to study

the planet.


Change is a mild way to put it for the lifeless world,

called HD80606b, where the word "mild" would never enter a weather forecast.

Normally, the planet is a toasty 980 degrees or so. But in the few hours it whips around its sun the planet gets

zapped with mega-heat, pushing the thermometer closer to 2,240 degrees.

During its brief close pass to its sun, the planet is 10 times nearer its star than Mercury is to our sun.

When it comes closest to its star, it becomes one giant "brewing storm" complete with shock waves, Laughlin

said. The radiation bombarding the planet is 800 times stronger than when it is farthest away.

Then just as quickly, the planet slingshots away and radiates the heat to the cool vacuum of space. It glows

cherry red and the temperature plummets, Laughlin said.

"Utterly bizarre," he said. "It is thoroughly completely uninhabitable. In a galaxy of uninhabitable planets, this

one stands out as being completely inhospitable to life."

The planet circles its star — the larger of two stars in a binary system — in a comet-like orbit in just 111 days.

The star is visible from Earth near the Big Dipper.

On Feb. 14, HD80606b will travel between the Earth and its star. There's a 15 percent chance that amateur

astronomers using small telescopes could see it swing by, obscuring a tiny part of the star, Laughlin said.

"This is indeed an oddball planet, where the temperature range of the season changes from hellish to superhellish,"

said Carnegie Institution astronomer Alan Boss. "This place makes Venus look like a nice place to live,

and that is saying something."


Don't tell me how uncomfortably hot it is in Arizona in the summer.

0 Comments:

Post a Comment

Subscribe to Post Comments [Atom]

<< Home