55cancrie
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NASA takes a Super-Earth's temperature
NASA researchers recently trained the Spitzer Space Telescope at a nearby Super-Earth, 55 Cancri e, and, for the first time, have managed to map its temperature as the exoplanet orbits its host star. The map reveals that the planet suffers from extreme temperature swings, depending on its orbit. Since 55 Cancri e circles so closely to its star (completing orbits in just 18 hours), it behaves much like the Earth's moon. That is, one side of the planet continually faces the star and is therefore far hotter than the opposite side -- 4400 degrees F and 2060 degrees F, respectively.
NASA finds 'super-Earth' with an atmosphere it can analyse
Astronomers at NASA, working with the ESA and the University College London, announced Tuesday that they have discovered a "super-Earth" exoplanet with an atmosphere, that, for the first time, they can analyse. The Hubble telescope's Wide Field Camera 3 (WFC3) first spotted the planet, dubbed 55 Cancri e, which is only about 40 light years away. Super-earths are simply rocky planets that are bigger than the Earth -- in this case, eight times bigger. They're widely believed to be the most common type of rocky planet in the galaxy.
