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NASA telescopes in Chile have discovered a comet from interstellar space, making its closest approach in October.
Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...
I/ATLAS, earlier known as A11pI3Z, is only the third interstellar visitor to be discovered passing through our corner of the ...
Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...
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How to see all the solar system’s planets in the night sky at onceThe great alignment, including Mercury, will only happen for a few evenings around 28 February, depending on your location. All seven planets will be visible briefly right after sunset, stretching ...
Only eight planets call our solar system home. Or there might still be nine if some astronomers are correct about an as-yet undiscovered large body out past Neptune.
The combination of these factors could explain why Earth is the only planet known to exhibit plate tectonics today. In a 2022 study, Collins and his colleagues found that Jupiter's icy moon Europa ...
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