habitable

What if There’s an Earth-Like Planet at One of Our Closest Stars?

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Just over four light-years away, our Solar System’s closest neighboring stars can be found. There’s red dwarf Proxima Centauri, at a distance of 4.2 light-years; and, just a little farther, at 4.37 light-years, a binary system of Sun-like stars – Alpha Centauri AB.   We don’t yet know if there are any Earth-like worlds orbiting … Read more

An Earthlike planet may be orbiting in a dead star’s ‘habitable zone’

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Planetary debris, including some objects the size of moons, may hint at a rocky exoplanet within the habitable zone of a stellar zombie, a new study suggests. The star in question is a white dwarf called WD1054–226, a cooling remnant of a star that exhausted all fuel at its core. If an exoplanet is confirmed … Read more

‘Weird’, Long Lost Rocks Could Explain How a Hellish Earth Became Habitable

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Early Earth is often described as ‘Hadean’ for good reason. Arising from the ashes of a collision that gave us our Moon, the primordial eon was characterized by hellish heat trapped beneath a thick blanket of carbon dioxide and water vapor.    Strangely those conditions should have been inhospitable for far longer than they were. … Read more

White dwarf star circled by 65 objects may host a planet in its habitable zone

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Astronomers have found 65 evenly spaced rocks orbiting a white dwarf star in its habitable zone, hinting that a planet’s gravity may be holding them there Space 11 February 2022 By Leah Crane Illustration of the white dwarf star WD 1054-226 orbited by clouds of planetary debris and a major planet in the habitable zone … Read more

Mars may have been habitable millions of years later than we thought

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Analysis of minerals in a Martian meteorite suggest that the planet may have begun to be hospitable for life 30 million years later than previously thought Space 2 February 2022 By Chen Ly Caption: NWA 7034Copyright: NASA NASA Deformations in a small mineral grain from a Martian meteorite hint that habitable conditions on Mars could … Read more

What really makes a planet habitable? Our assumptions may be wrong

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Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute, host of “Ask a Spaceman” and “Space Radio,” and author of “How to Die in Space.” Sutter contributed this article to Space.com’s Expert Voices: Op-Ed & Insights. Remember Hoth, that ice-covered world from “The Empire Strikes Back”? Though some creatures eked … Read more

The Red Sky Paradox Will Make You Question Our Very Place in The Universe

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On the grand cosmic scale, our little corner of the Universe isn’t all that special – this idea lies at the heart of the Copernican principle. Yet there’s one major aspect about our planet that’s peculiar indeed: Our Sun is a yellow dwarf.    Because our home star is what we know most intimately, it … Read more