Hot 'Super-Jupiter' Swings By Its Star Like A Giant Comet | Video

190 light-years out from Earth, exoplanet HD 80606b loops very close to its parent star every 111 days; its temperature soaring – then dipping –1500°F(816° C) in less than one of its 90-hour days. Observing in the infrared, the Spitzer Space Telescope recorded a peak temperature over 2,000° F (1,100° C) during closest approach. This gas giant is about 4 times more massive than our one Jupiter. It’s highly eccentric orbit may take another 10 Billion years to circularize…if the planet lasts that long.

Extremely Hot and Incredibly Close: How Hot Jupiters Defy Theory

credit : NASA/JPL-Caltech