Author: Pat Brennan
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Discovery Alert: An Ice-Cold Earth?
A candidate planet that might be remarkably similar to Earth, HD 137010 b, has one potentially big difference: It could be colder than perpetually frozen Mars.
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Discovery Alert: Flaring Star, Toasted Planet
The Discovery A giant planet some 400 light-years away, HIP 67522 b, orbits its parent star so tightly that it appears to cause frequent flares from the star’s surface, heating and inflating the planet’s atmosphere. Key Facts On planet Earth,…
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Discovery Alert: A Possible Perpendicular Planet
The Discovery A newly discovered planetary system, informally known as 2M1510, is among the strangest ever found. An apparent planet traces out an orbit that carries it far over the poles of two brown dwarfs. This pair of mysterious objects…
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Discovery Alert: Four Little Planets, One Big Step
The Discovery Four rocky planets much smaller than Earth orbit Barnard’s Star, the next closest to ours after the three-star Alpha Centauri system. Barnard’s is the nearest single star. Key Facts Barnard’s Star, six light-years away, is notorious among astronomers…
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Discovery Alert: ‘Super-Earth’ Swings from Super-Heated to Super-Chill
The Discovery A possible “super-Earth” orbits a relatively close, Sun-like star, and could be a habitable world – but one of extreme temperature swings, from scorching heat to deep freeze. Key Facts The newly confirmed planet is the outermost of…