70,000 years ago, a nomadic star (Scholz's Star) came within a light-year of the Sun, flinging dozens of comets and asteroids out of the solar system. And in about a million years, another star named Gliese 710 will pass five times closer than Scholz's Star, likely kicking out millions of objects.

70,000 years ago, a nomadic star (Scholz's Star) came within a light-year of the Sun, flinging dozens of comets and asteroids out of the solar system. And in about a million years, another star named Gliese 710 will pass five times closer than Scholz's Star, likely kicking out millions of objects.

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