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4 tiny, Earth-like planets found circling 2nd-closest star system to us — and could be visited by future human generations
A quartet of small, rocky exoplanets likely circle Barnard's Star, around 6 billion light-years from Earth, putting them in ...
A Mysterious Meteorite Fell to Earth From a Planet That Doesn't Exist
However, not all of those celestial bodies survived, and a new analysis of a the meteorite NWA 15915 shows that it likely originated from a world that was similar to Mercury in its composition—but not ...
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Pluto’s demotion to dwarf planet status
Why was Pluto reclassified as a dwarf planet? One might think that it’s purely a matter of size. Mercury, the smallest of the ...
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4 rocky exoplanets found around Barnard's Star, one of the sun's nearest neighbors
The planets are all too hot for life as we know it, but astronomers haven’t given up searching for more planets in Barnard's ...
Astronomers Trace Mysterious Signal to Destroyed Planet
"We might have finally found the cause of a mystery that's lasted over 40 years," said researcher Sandino Estrada-Dorado.
Astronomers Witness a White Dwarf Devouring a Planet
A decades-old cosmic mystery may finally be solved. Scientists now suspect that the strange X-ray glow from a distant white ...
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Strange X-ray signal could be coming from a doomed planet
Astronomers have detected mysterious X-ray signals coming from a nearby white dwarf star for more than 40 years. We may now ...
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Space scientists spot planet killer capable of ripping worlds apart
Space scientists say they have located a planet killer capable of ripping worlds to pieces. Researchers believe they've found evidence that a white dwarf may have torn a Jupiter-sized planet apart. A ...