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Astronomers Uncover Alien World

Astronomers Uncover Alien World 

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  #1  
08-12-2011, 08:59 AM
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Astronomers Uncover Alien World

Astronomers have discovered the darkest known planet.
The exoplanet, known as TrES-2b, reflects less than 1 per cent of light, which makes it darker than any other planet or moon.
The discovery, detailed in the journal Monthly Notices of the Royal Astronomical Society, was made by analysing data from Nasa's Kepler spacecraft, which provides extremely precise measurements on the brightnesses of faraway stars.

'TrES-2b is considerably less reflective than black acrylic paint, so it's truly an alien world,' David Kipping of the Harvard-Smithsonian Center for Astrophysics (CfA) told Science Daily.
TrES-2b, a gas exoplanet roughly the size of Jupiter, is around 750 light years away and was discovered in 2006 by the Trans-Atlantic Exoplanet Survey; hence its less-than-catchy name.

The reason it differs from other similar-sized planets is that Jupiter, for example, is surrounded by ammonia clouds that reflect more than one third of its sunlight.
TrES-2b has no ammonia clouds to reflect light because it is extremely hot.
It orbits its star - GSC 03549-02811 - at a relatively intimate five million kilometres, which means it exhibits temperatures of up to 1,000C.
Instead, it has an atmosphere made up of chemicals such as vaporized sodium, potassium and gaseous titanium oxide, which absorb light, but that still does not explain the planet's extreme blackness.

However, TrES-2b is not entirely black. It's extreme heat means it gives off a faint red glow, reminiscent of burning embers.
Kipping and his team arrived at the discovery by measuring the light TrES-2b emitted as it orbited its star, much like our moon does with earth, studying both the 'visible' side and its 'dark' side during orbit.
'By combining the impressive precision from Kepler with observations of over 50 orbits, we detected the smallest-ever change in brightness from an exoplanet: just six parts per million,' said Kipping.
'In other words, Kepler was able to directly detect visible light coming from the planet itself.'

Black planet: This artist's impression shows TrES-2b, a planet so hot it glows red like embers, but is also officially the darkest known planet:
Click image for larger version

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  #2  
08-12-2011, 09:36 AM
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Re: Astronomers Uncover Alien World

We should fire a real big nuke at it and see what happens.
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  #3  
08-12-2011, 11:10 AM
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Re: Astronomers Uncover Alien World

I bet there is a lot of crime there.
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  #4  
08-12-2011, 11:56 AM
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Re: Astronomers Uncover Alien World

We should fire a real big nuke at it and see what happens.
  #5  
08-12-2011, 01:03 PM
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Re: Astronomers Uncover Alien World

  #6  
08-12-2011, 05:30 PM
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Re: Astronomers Uncover Alien World

Loooooove this stuff Gorgeous rendition
  #7  
08-12-2011, 06:49 PM
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Re: Astronomers Uncover Alien World

on the bbc site they say the scientists described it as "blacker than the darkest coal". which means there's a whole new scientific dimension to being racist, i mean i know a few people who love using that saying
  #8  
08-13-2011, 10:51 PM
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Re: Astronomers Uncover Alien World

so it's blacker than black...which means it's toasty hot. obviously there's no life on the planet, so why focus on it.
  #9  
08-14-2011, 09:56 AM
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Re: Astronomers Uncover Alien World

Wud be a great place to film a sf movie lol
  #10  
08-14-2011, 03:46 PM
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Re: Astronomers Uncover Alien World

so it's blacker than black...which means it's toasty hot. obviously there's no life on the planet, so why focus on it.
So me and Blewvane can use it for target practice.


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