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Underknown on MSNWhat If We Discovered a New Planet in our Solar System?The Solar System seems calm, but that tranquility is fragile. Now imagine one day looking up and spotting something ...
Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...
New research says that Earth could be ejected from our solar system if a passing star was to come close enough.
Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the ...
In the outer reaches of our solar system, far beyond the orbit of Pluto, lies Sedna, one of the most mysterious objects ever ...
In the frozen outskirts of the solar system, a reddish dwarf planet orbits in silence. Known as Sedna, it is so distant that ...
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