Cold comets — both natives and the interstellar Comet Borisov — have nickel and iron vapor in their atmospheres, and scientists want to know why. The post Interstellar and Solar System Comets Share a Surprising Ingredient: Nickel appeared first on Sky & Telescope.
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Interstellar Comet Was Pristine Sample of Planet Formation
New analysis shows that Comet 2I/Borisov, which zipped nearest the Sun in late 2019, was unlike any comet we’ve seen before. The post Interstellar Comet Was Pristine Sample of Planet Formation appeared first on Sky & Telescope.
Read MoreCan We Expect Seven Interstellar Visitors Per Year?
A new study estimates the number of interstellar objects that fly through the inner solar system every year, and it could be quite a lot. The post Can We Expect Seven Interstellar Visitors Per Year? appeared first on Sky & Telescope.
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