Sci/Tech Space telescope picks out 'green dot' in a field of stars.

MrBrooks

Brooooooooooown!
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A £200 million Nasa space telescope has picked out a star with a surface cooler than a human body - at just 25 degrees celsius, it's around room temperature. It's the coldest 'brown dwarf' ever detected outside the solar system. Like other brown dwarfs, it began life like a star - before it collapsed under its own weight into a dense ball of gas. But unlike a star, it didn't 'ignite'.

But, unlike a star, it didn't have enough mass to fuse atoms at its core, and shine steadily with starlight. Instead, it has continued to cool and fade since its birth, and now gives off only a feeble amount of infrared light. ISE's highly sensitive infrared detectors were able to catch the glow of this object during its two year sky-scan - stitching together an incredible 'sky Atlas' from 2.7 million telescope images which capture the whole sky around us, and pick out details from cold, dusty galaxies, to tiny, distant stars. Half a billion stars are visible in the 'Atlas', which shows every part of the sky visible from Earth, captured by hi-tech infrared instruments which can pick out dusty and distant objects invisible to many other telescopes.

 
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camelCase

The Case of the Mysterious Camel.
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I could touch that star and not die? ;O
(Assuming the vacuum of space doesn't kill me first)
 

The Helper

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It probably still puts out some kind of funky radiation that would fry you.
 

Accname

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I could touch that star and not die? ;O
(Assuming the vacuum of space doesn't kill me first)

Its a brown dwarf, if you get too close you will be crushed by its gravity just like in a black hole.
 

tom_mai78101

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Is that a frown I see or a smiley face I can't unsee? I also wished I can hug a star.
 

Ninja_sheep

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But, unlike a star, it didn't have enough mass to fuse atoms at its core, and shine steadily with starlight. Instead, it has continued to cool and fade since its birth, and now gives off only a feeble amount of infrared light.

I always thought infrared isn't green.
 

phyrex1an

Staff Member and irregular helper
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I always thought infrared isn't green.
The camera shoots in infrared wavelengths and the images are translated to something we humans can see.
The star isn't green, it's the dot on the image which is green. The star doesn't give off any visible light at all, it would look like the dark side of Jupiter.
 
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