K2-25: An eccentric hot Neptune with the mass of seven Earths

Of the roughly 4,300 exoplanets confirmed to date, about ten percent of them are classified as "hot Jupiters." These are planets with masses between about 0.4 and 12 Jupiter-masses and orbital periods less than about 110 ...

Researchers use 'hot Jupiter' data to mine exoplanet chemistry

After spotting a curious pattern in scientific papers—they described exoplanets as being cooler than expected—Cornell University astronomers have improved a mathematical model to accurately gauge the temperatures of planets ...

Eighteen-hour-year planet on edge of destruction

Astronomers from the University of Warwick have observed an exoplanet orbiting a star in just over 18 hours, the shortest orbital period ever observed for a planet of its type.

Planet WASP-12b is on a death spiral, say scientists

Earth is doomed—but not for 5 billion years. Our planet will be roasted as our sun expands and becomes a red giant, but the exoplanet WASP-12b, located 600 light-years away in the constellation Auriga, has less than a thousandth ...

New 'warm Jupiter' exoplanet discovered

An international team of astronomers reports the discovery of a new "warm Jupiter" alien world transiting a main sequence late F-type star on an eccentric orbit. The newfound exoplanet, designated TOI-677 b, is about 20 percent ...

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