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23 Jan 2012
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All Alone and Very, Very Cold  With an estimated temperature of just 50K, OGLE-2005-BLG-390L b is the chilliest exoplanet yet discovered. (Artist’s concept)  While most of the exoplanets found so far are hellishly hot, OGLE-2005-BLG-390L b has the distinction of being the coldest exoplanet yet discovered. The planet takes about 10 Earth years to orbit its tiny dwarf star, and it’s a chilly trip; the average temperature on OGLE-2005-BLG-390L b is 50 Kelvin, or minus 370 degrees Fahrenheit. A good costume for trick-or-treating on this frigid planet would be a toasty self-heating spacesuit, an oxygen supply, ice skates and plenty of hot cocoa.

All Alone and Very, Very Cold 

With an estimated temperature of just 50K, OGLE-2005-BLG-390L b is the chilliest exoplanet yet discovered. (Artist’s concept) 

While most of the exoplanets found so far are hellishly hot, OGLE-2005-BLG-390L b has the distinction of being the coldest exoplanet yet discovered.

The planet takes about 10 Earth years to orbit its tiny dwarf star, and it’s a chilly trip; the average temperature on OGLE-2005-BLG-390L b is 50 Kelvin, or minus 370 degrees Fahrenheit. A good costume for trick-or-treating on this frigid planet would be a toasty self-heating spacesuit, an oxygen supply, ice skates and plenty of hot cocoa.

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    All Alone and Very, Very Cold With an estimated temperature of just 50K, OGLE-2005-BLG-390L b is the chilliest exoplanet...
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