Astronomers have discovered that the nearest star to the Earth, Alpha Centauri, has an exoplanet only slightly heavier than the Earth.


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Big news: Astronomers have discovered that the nearest star to the Earth, Alpha Centauri, has an exoplanet only slightly heavier than the Earth.

Alpha Centauri is actually a triple star system, with two sunlike stars in a tight orbit around each other and a third star far out orbiting them both. The exoplanet orbits one of the inner stars every 3.2 days.

More details from Nature here.

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  • Chris Kirkendall

    Seems almost unbelievable a planet could have a stable orbit around a binary star system or the other system mentioned, a binary pair with another binary star sytem orbiting it, yet the planet had a stable orbit – WHEW ! ! The Physics of that is mind-boggling. I think the recent discoveries in Science (especially in Astronomy, Astrophysics & Cosmology) are eclipsing Science fiction…

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