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Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the ...
Because the Kuiper Belt had seemed small, one theory had been that the solar nebula that formed our planetary system had also been smaller than normal. The discovery of this Kuiper Belt 2 ...
I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...
“Our Solar System’s Kuiper Belt long appeared to be very small in comparison with many other planetary systems,” Wes Fraser, the lead author of the study from the National Research Council ...
This potential second belt could extend as far as 13.5 billion kilometers (8.4 billion miles) from the sun, marking a significant expansion of our known solar system.
A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system. The object—which orbits out beyond Neptune—has been named "2017 OF201" by the ...
Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...
Located beyond low-Earth orbit, these radiation belts were discovered in 1958 by astrophysicist James Van Allen who helped uncover the key to enabling exploration of the outer solar system.
Because the Kuiper Belt had seemed small, one theory had been that the solar nebula that formed our planetary system had also been smaller than normal. The discovery of this Kuiper Belt 2 ...
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