Go Back   NarkSide Nutrition >
Articles
> Articles > News and Politics Forum
Connect with Facebook

News and Politics Forum Recent News and Occurrences in the Political scene around the world...

Reply
 
Article Tools Search this Article Display Modes
  #1  
Old
StrawberrySun's Avatar
StrawberrySun StrawberrySun is offline
NarkSide's Ultimate PostWhore
Points: 337,339, Level: 100
Points: 337,339, Level: 100 Points: 337,339, Level: 100 Points: 337,339, Level: 100
Level up: 0%, 0 Points needed
Level up: 0% Level up: 0% Level up: 0%
Activity: 58%
Activity: 58% Activity: 58% Activity: 58%
Join Date: Mar 2009
Location: Barbados
Real Name: Sunset
Rep Power: 130
StrawberrySun has a brilliant future
StrawberrySun has a brilliant futureStrawberrySun has a brilliant futureStrawberrySun has a brilliant futureStrawberrySun has a brilliant futureStrawberrySun has a brilliant futureStrawberrySun has a brilliant futureStrawberrySun has a brilliant futureStrawberrySun has a brilliant futureStrawberrySun has a brilliant futureStrawberrySun has a brilliant futureStrawberrySun has a brilliant future
Default Newfound Planet Orbits Backward
by StrawberrySun 08-14-2009, 08:32 AM

Planets orbit stars in the same direction that the stars rotate. They all do. Except one.

A newfound planet orbits the wrong way, backward compared to the rotation of its host star. Its discoverers think a near-collision may have created the retrograde orbit, as it is called.

The star and its planet, WASP-17, are about 1,000 light-years away. The setup was found by the UK's Wide Area Search for Planets (WASP) project in collaboration with Geneva Observatory. The discovery was announced today but has not yet been published in a journal.

"I would have to say this is one of the strangest planets we know about," said Sara Seager, an astrophysicist at MIT who was not involved in the discovery.


What's going on

A star forms when a cloud of gas and dust collapses. Whatever movement the cloud had becomes intensified as it condenses, determining the rotational direction of the star. How planets form is less certain. They are, however, known to develop out of the leftover, typically disk-shaped mass of gas and dust that swirls around a newborn star, so whatever direction that material is moving, which is the direction of the star's rotation, becomes the direction of the planet's orbit.

WASP-17 likely had a close encounter with a larger planet, and the gravitational interaction acted like a slingshot to put WASP-17 on its odd course, the astronomers figure.

"I think it's extremely exciting. It's fascinating that we can study orbits of planets so far away," Seager told SPACE.com. "There's always theory, but there's nothing like an observation to really prove it."

Cosmic collisions are not uncommon. Earth's moon was made when our planet collided with a Mars-sized object, astronomers think. And earlier this week NASA's Spitzer Space Telescope found evidence of two planets colliding around a distant, young star. Some moons in our solar system are on retrograde orbits, perhaps at least in some cases because they were flying through space alone and then captured; that's thought to be the case with Neptune's large moon Triton.

The find was made by graduate students David Anderson at Keele University and Amaury Triaud of the Geneva Observatory.


Bloated world

WASP-17 is about half the mass of Jupiter but bloated to twice its size. "This planet is only as dense as expanded polystyrene, 70 times less dense than the planet we're standing on," said professor Coel Hellier of Keele University.

The bloated planet can be explained by a highly elliptical orbit, which brings it close to the star and then far away. Like exaggerated tides on Earth, the tidal effects on WASP-17 heat and stretch the planet, the researchers suggest.

The tides are not a daily affair, however. "Instead it's creating a huge amount of friction on the inside of the planet and generating a lot of energy, which might be making the planet big and puffy," Seager said.

WASP-17 is the 17th extrasolar planet found by the WASP project, which monitors hundreds of thousands of stars, watching for small dips in their light when a planet transits in front of them. NASA's Kepler space observatory is using the same technique to search for Earth-like worlds.

http://news.yahoo.com/s/space/20090812/sc_...torbitsbackward
__________________
Apollo Fitness Clothing: Clothes that look as good as you do!
Reply With Quote
Views 2080 Comments 3
Total Comments 3

Comments

  #2  
Old 08-14-2009
Narkissos's Avatar
Narkissos Narkissos is offline
Owner | Administrator
Points: 10,275,039, Level: 100
Points: 10,275,039, Level: 100 Points: 10,275,039, Level: 100 Points: 10,275,039, Level: 100
Level up: 0%, 0 Points needed
Level up: 0% Level up: 0% Level up: 0%
Activity: 99%
Activity: 99% Activity: 99% Activity: 99%
 
Join Date: Feb 2007
Location: Barbados
Posts: 47,889
Real Name: Corey
Rep Power: 712
Narkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant future
Narkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant future
Default

I have a funny feeling that there will be sentient life there.
__________________
___________________
My training journals: 2005; 2006; 2007; 2008; 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, & 2017.
My training Videos? View 'em Here!

Got a question for me? Ask --> Here!

DISGUSTING ass-kicking conditioning workouts: 1 2 3 4 5 6 7 8 9 10 11
Reply With Quote
  #3  
Old 08-14-2009
NightTrain's Avatar
NightTrain NightTrain is offline
Member of the month - October 2010
Points: 123,251, Level: 100
Points: 123,251, Level: 100 Points: 123,251, Level: 100 Points: 123,251, Level: 100
Level up: 0%, 0 Points needed
Level up: 0% Level up: 0% Level up: 0%
Activity: 9%
Activity: 9% Activity: 9% Activity: 9%
 
Join Date: Sep 2007
Location: Louisville, Ky
Posts: 5,282
Real Name: John
Rep Power: 106
NightTrain has a brilliant future
NightTrain has a brilliant futureNightTrain has a brilliant futureNightTrain has a brilliant futureNightTrain has a brilliant futureNightTrain has a brilliant futureNightTrain has a brilliant futureNightTrain has a brilliant futureNightTrain has a brilliant futureNightTrain has a brilliant future
Default

Whateva........
__________________
Member of the Month: August 2009
Member of the Month: October 2009
5% off your entire order @ trueprotein.com--- use discount code JWG401
Reply With Quote
  #4  
Old 08-14-2009
Narkissos's Avatar
Narkissos Narkissos is offline
Owner | Administrator
Points: 10,275,039, Level: 100
Points: 10,275,039, Level: 100 Points: 10,275,039, Level: 100 Points: 10,275,039, Level: 100
Level up: 0%, 0 Points needed
Level up: 0% Level up: 0% Level up: 0%
Activity: 99%
Activity: 99% Activity: 99% Activity: 99%
 
Join Date: Feb 2007
Location: Barbados
Posts: 47,889
Real Name: Corey
Rep Power: 712
Narkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant future
Narkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant futureNarkissos has a brilliant future
Default

^^

It's been a slow news day... Don't hold it against me.
__________________
___________________
My training journals: 2005; 2006; 2007; 2008; 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, & 2017.
My training Videos? View 'em Here!

Got a question for me? Ask --> Here!

DISGUSTING ass-kicking conditioning workouts: 1 2 3 4 5 6 7 8 9 10 11
Reply With Quote
Reply

Bookmarks

Tags
backwards, planet, science, space, world news


Currently Active Users Viewing This Article: 1 (0 members and 1 guests)
 
Article Tools Search this Article
Search this Article:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 11:49 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2007 - 2012, Apollo Fitness Barbados