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Deadly Dance: Giant Planet Found Orbiting Huge Star
space DOT COM ^ | 23 January 2003 | By Robert Roy Britt

Posted on 01/29/2003 6:26:26 AM PST by vannrox

Deadly Dance: Giant Planet Found Orbiting Huge Star

By Robert Roy Britt
Senior Science Writer
posted: 07:00 am ET
23 January 2003

A large planet recently found orbiting a distant star serves as a preview for the likely frying fate that awaits our own planet.



The star, called HD 47536, is more than 23 times the diameter of our Sun. It is the largest star ever found to harbor a planet. The discovery was announced Wednesday.

The planet is five to 10 times heavier than Jupiter and orbits the star more than twice as far as Earth is from the Sun, or at a distance of roughly 186 million miles (300 million kilometers). It goes around the star every 712 days.

The 6th-magnitude giant star HD 47536, around which a planet has been found. CREDIT: Digital Sky Survey



30 Billion Earths? New Estimate of Exoplanets in Our Galaxy

The star is in the southern constellation of Canis Major (The Great Dog) and is at the very fringe of visibility for naked-eye observers under perfectly dark skies. It is almost 400 light-years away. Only one other planet has ever been found farther from our solar system.

Along with other recent discoveries, including a planet detected in a system oftwo closely orbiting stars, astronomers are realizing that planets can grow to all sorts of sizes in a myriad of environments and orbital configurations.

The new observations were made using the European Southern Observatory's La Silla Observatory in Chile. The work was led by German astronomer Johny Setiawan.

The planet was not seen directly. Instead, it was detected by noting a gravitational wobble it induces on the star. This so-called radial-velocity method is to date the most successful used to find planets outside our solar system.

Interestingly, however, this discovery was a side show to the real work of observing giant stars in an effort to spot variations in their shape, size and output.

About two-thirds of the 80 star examined in the study were found to wobble. Some of the wobbles are probably induced by companion stars, astronomers said. But HD 47536 attracted attention and was examined more closely.

"We are very excited about this discovery because it now widens the search for exoplanets towards more massive stars," said Luca Pasquini, an ESO researcher also involved in the find.

Massive stars typically rotate very rapidly, making observations difficult. But as they age, the stars inflate and their rotation is slowed, "and we then have a much better chance of detecting possible exoplanets in orbit around them," Pasquini said.

Even though HD 47536 and its planet don't resemble the Sun and Earth, a destructive process going on there is similar to one that will occur here in a few billion years. The star is swelling so dramatically that the fraction of sky it occupies, as seen from the planet, is growing, astronomers say. Temperatures are rising, along with winds. In some tens of millions of years, the planet will literally fry.

When a similar scenarioplays out on Earth, extreme drought will prevail in the early stages, theorists say. Eventually, the oceans will evaporate. Ultimately, Earth will be incinerated. Unless, some have suggested, our world moves outward (due to the reduced gravity of a dying Sun). One team of theorists has even calculated a way to move our planet out of danger.



TOPICS: Culture/Society; Extended News; Foreign Affairs; Government
KEYWORDS: big; cold; earth; earthlike; explore; far; huge; light; lightyear; massive; nasa; planet; space; star; sun; xplanets
Very interesting. I wonder how many planets have been discovered so far? I'm losing track.
1 posted on 01/29/2003 6:26:26 AM PST by vannrox
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To: vannrox
How will the greenfreaks stop this type of global warming!?!?!?

Face it hippies, our world will end in a firey hell. No federal regulations against a shoe factory in Pittsburgh will stop it.
2 posted on 01/29/2003 6:29:30 AM PST by smith288 (the tag that itches the back of your neck)
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To: vannrox
.


EXOPLANET NEWS
Your ONE STOP source for all
Planetary Discoveries.



.

3 posted on 01/29/2003 6:30:51 AM PST by vannrox (The Preamble to the Bill of Rights - without it, our Bill of Rights is meaningless!)
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To: vannrox
This could be series! Time to take a long shower.;~)
4 posted on 01/29/2003 6:35:20 AM PST by verity
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To: smith288
Some links...











5 posted on 01/29/2003 6:35:47 AM PST by vannrox (The Preamble to the Bill of Rights - without it, our Bill of Rights is meaningless!)
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To: verity
... that will occur here in a few billion years ...

I think you may run out of hot water . . .

6 posted on 01/29/2003 6:38:01 AM PST by AnAmericanMother (. . . and don't hold your breath)
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To: vannrox
One team of theorists has even calculated a way to move our planet out of danger.

Talk about nothing better to do. Calculating a solution for a problem that won't happen for millions of years? I mean I have got better things to do with my time.

7 posted on 01/29/2003 6:41:16 AM PST by kjam22
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To: vannrox
The planet is five to 10 times heavier than Jupiter and orbits the star more than twice as far as Earth is from the Sun, or at a distance of roughly 186 million miles (300 million kilometers). It goes around the star every 712 days

This isn't exactly a planet as it's pushing the envelope for a protostar or brown dwarf classification. Of course being that large does mean that it will create it's own habitable zone in the form of radiated heat from the planet.

Come to think of it there was an article that postulated that Earth type planets may not be able to survive gravitational pertubations around stars due to influences from gas giants.

We may find that there are more habitable giant moons (like Callisto/Europa/Ganymede size) than habitable planets outside the solar system.

8 posted on 01/29/2003 6:46:12 AM PST by Centurion2000 (The meek shall inherit the Earth. The stars belong to the bold.)
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To: Centurion2000
GO HERE TO SEE THE COOLEST VRML graphic portrayals of extrasolar planets!
Download the player. They are amazing!
9 posted on 01/29/2003 6:51:44 AM PST by vannrox (The Preamble to the Bill of Rights - without it, our Bill of Rights is meaningless!)
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To: vannrox
"It is almost 400 light-years away."

What!?!! That's practically in the back yard!

10 posted on 01/29/2003 6:52:31 AM PST by Savage Beast
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To: vannrox
This is a VRML model for 55 Cancri, it has four discovered planets. Very cool. You have to down load the player though. They don't have windows 2000, but the NT version works fine on my windows 2000 system.


11 posted on 01/29/2003 6:57:46 AM PST by vannrox (The Preamble to the Bill of Rights - without it, our Bill of Rights is meaningless!)
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To: vannrox
This is a VRML model for 55 Cancri, it has four discovered planets. Very cool. You have to down load the player though. They don't have windows 2000, but the NT version works fine on my windows 2000 system.


12 posted on 01/29/2003 6:57:48 AM PST by vannrox (The Preamble to the Bill of Rights - without it, our Bill of Rights is meaningless!)
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To: kjam22
I mean I have got better things to do with my time.

Yes, but will what you do with your time be as lucrative as receiving federally funded tax dollars to propose a solution?

13 posted on 01/29/2003 7:00:05 AM PST by MosesKnows
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To: vannrox
For an interesting alternative explanation of these discoveries visit this site:

http://www.electric-cosmos.org

Binary stars and the common configuration of a star and gas giant planets may be the result of the electrical nature of the universe.

As an EE this makes a lot of sense to me, but the site is written for the lay-person with links to more thorough research.

enjoy...
14 posted on 01/29/2003 7:00:37 AM PST by destroid
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To: Centurion2000
"pertubations around stars due to influences from gas giants. "

There is a celebrity-activist joke in there somewhere.
15 posted on 01/29/2003 7:06:48 AM PST by Rebelbase (Rock with Celtic roots at http://www.sevennations.com)
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To: vannrox
read later
16 posted on 01/29/2003 7:38:41 AM PST by LiteKeeper
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To: vannrox
Bloated... red... in the "Big Dog" constellation... I propose that we name this star "Clinton's Nose".
17 posted on 01/29/2003 7:47:23 AM PST by steve-b
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To: smith288
Face it hippies, our world will end in a firey hell.

In a million years, either we won't be around, or we will have figured out a way to move the earth to a better location. Either way, I won't worry about it.

18 posted on 01/29/2003 8:00:18 AM PST by SauronOfMordor (To see the ultimate evil, visit the Democrat Party)
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To: vannrox
Very interesting. I wonder how many planets have been discovered so far?

I think it's around 100 or so. ("Or so" meaning +/- 25).

19 posted on 01/29/2003 8:04:22 AM PST by cogitator
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To: SauronOfMordor
Exactly... No matter how clean we keep this place...its destined for doom... and no EPA regulation to reduce pollution from 12% to 10% will stop it. Stupid greenfreaks.


PS- I dont think we are going trekking to any planets. Just a belief of mine.
20 posted on 01/29/2003 8:22:45 AM PST by smith288 (the tag that itches the back of your neck)
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To: steve-b
...name it "Clinton's Nose"...
BINGO...We have a WINNER!
21 posted on 01/29/2003 10:01:44 AM PST by TheJollyRoger (Remember the Alamo. Remember WTC. Remember the Pentagon. Let's roll!)
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Catastrophism

22 posted on 04/01/2006 8:19:02 AM PST by SunkenCiv (Yes indeed, Civ updated his profile and links pages again, on Monday, March 6, 2006.)
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To: Centurion2000
We may find that there are more habitable giant moons (like Callisto/Europa/Ganymede size) than habitable planets outside the solar system.

That would be a way kewl place to live. Imagine what earth's sky would look like if the moon filled half of it!

23 posted on 04/01/2006 8:25:04 AM PST by null and void (Start worrying. Details to follow...)
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To: null and void
The only problem would be that the worlds would more than likely be tide locked to the dwarf and only a strip of the land would be actually habitable. The rest would be in a permanent ice age and a desert on opposite sides of the planet.

Of course, the view would be most impressive especially if the dwarf has an extensive rocky ring system.

24 posted on 04/01/2006 3:08:39 PM PST by Centurion2000 (Every man must be tempted, sometimes,to hoist the black flag, and begin slitting throats.)
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To: Centurion2000

I could imagine the planet/moon to tide locked to it's primary planet and still have all parts illuminated by the star.

Compare to our own moon. Only the extreme polar regions don't have a 'month' long day cycle.


25 posted on 04/01/2006 5:10:06 PM PST by null and void (Start worrying. Details to follow...)
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Object Survives Being Swallowed by a Star
Space.com on Yahoo | 8/3/06 | Ker Than
Posted on 08/03/2006 1:40:47 PM EDT by NormsRevenge
http://www.freerepublic.com/focus/f-chat/1677175/posts


26 posted on 08/19/2006 7:39:48 PM PDT by SunkenCiv (updated my FR profile on Thursday, August 10, 2006. https://secure.freerepublic.com/donate/)
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· X-Planets ping list · join · view topics · view or post blog messages · bookmark ·

27 posted on 08/19/2006 7:41:36 PM PDT by SunkenCiv (updated my FR profile on Thursday, August 10, 2006. https://secure.freerepublic.com/donate/)
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updates.
 
Catastrophism
 
· join · view topics · view or post blog · bookmark · post new topic ·
 
X-Planets
· join · view topics · view or post blog · bookmark · post new topic ·

28 posted on 07/14/2008 11:25:12 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/_________________________Profile updated Friday, May 30, 2008)
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