When we think of exoplanets that may be able to support life, we home in on the habitable zone. A habitable zone is a region ...
Eventually, every stellar civilization will have to migrate to a different star. The habitable zone around all stars changes ...
More than a few buzz our own star on timescales of thousands to millions of years. But how many of these stellar interlopers perturb a fraction of the estimated few trillion comets that make up ...
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