Comets
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2I/Borisov is the first interstellar comet seen, and Hubble has been watching its journey through our neighborhood. The telescope has snapped new images of the comet, which has now swung past the Sun and is on its way back out of the solar system.
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While NASA's TESS satellite was staring off into the depths of interstellar space, the comet 46P/Wirtanen wandered into view. The satellite managed to catch an explosive outburst from the comet in more detail than ever seen before.
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Scientists have captured a close-up view of the ancient alien comet 2l/Borisov, which is currently careening through our solar system before it shoots back out into interstellar space, never to be seen again.
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While comet flybys had been performed before, at the outset of the ESA’s Rosetta mission to the 67P/Churyumov-Gerasimenko nobody had ever entered orbit around a comet, let alone try to land on one.
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South African researchers found new evidence supporting the hypothesis that Earth was struck by an asteroid 12,800 years ago, causing global cooling.
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Using telescopes trained on the interstellar comet 2I/Borisov, astronomers have identified the first gas molecules from a comet originating outside the solar system.
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A strange object recently discovered in our solar system has been confirmed to be interstellar in origin, and it now has an official name: 2I/Borisov.
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Images returned by the Rosetta mission show dramatic evidence of collapsing cliffs and bouncing boulders on Comet 67P/Churyumov-Gerasimenko.
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Astronomers have sighted a comet that could be the second interstellar object ever detected.
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Images sent back by ESA's Rosetta probe show that it wasn't only thing orbiting comet 67P/Churyumov-Gerasimenko (67P/C-G). A comparison of images taken four years ago when the comet was closest to the Sun shows a piece of debris about 4 m (13 ft) in diameter circling 67P/C-G like a mini-moon.
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It’s been suggested in the past that life could hitch a ride on asteroids or comets to jump from world to world – a process known as panspermia. Now, a Harvard team has calculated just how likely that scenario would be throughout the Milky Way. In short: extremely.
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Astronomers have discovered a weird star system that appears to be dimming completely at random, and none of the usual explanations seem to fit.
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