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Author Topic: Excessively sunny today, highs around 2240  (Read 1071 times)

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Offline The OverlordTopic starter

Excessively sunny today, highs around 2240
« on: January 30, 2009, 03:58:50 AM »



Odd planet's extreme global warming: Highs of 2240


http://news.yahoo.com/s/ap/20090128/ap_on_sc/sci_hot_planet

Quote
WASHINGTON 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 super-hellish," said Carnegie Institution astronomer Alan Boss. "This place makes Venus look like a nice place to live and that is saying something."


Offline Jagerin

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Re: Excessively sunny today, highs around 2240
« Reply #1 on: January 30, 2009, 08:51:57 AM »
Wow...O_O

Offline WyldRanger

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First observation of changing weather on another planet
« Reply #2 on: January 30, 2009, 02:42:26 PM »
(outside of solar system of course)  :)


http://news.yahoo.com/s/ap/20090128/ap_on_sc/sci_hot_planet


Quote
WASHINGTON 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 super-hellish," said Carnegie Institution astronomer Alan Boss. "This place makes Venus look like a nice place to live and that is saying something."

Offline Trieste

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Re: Excessively sunny today, highs around 2240
« Reply #3 on: January 30, 2009, 10:43:16 PM »
Merged the threads.

Offline WyldRanger

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Re: Excessively sunny today, highs around 2240
« Reply #4 on: February 01, 2009, 02:37:32 PM »
 :-[ My bad.

Offline The OverlordTopic starter

Re: Excessively sunny today, highs around 2240
« Reply #5 on: February 01, 2009, 03:22:54 PM »
:-[ My bad.

It's cool, we both posted within a short time of one another, I noticed it right before Tri merged them.  ;D

Offline Will

Re: Excessively sunny today, highs around 2240
« Reply #6 on: February 02, 2009, 02:52:10 PM »
Heh, it was so awesome it needed to be posted twice.  Thanks guys! ;D