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Astronomy

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NOT LIKE THE OTHERS  Many asteroids share Jupiter’s orbit (illustrated, not to scale). Most asteroids travel in the same direction around the sun as the planet. But there’s one moving in reverse, which could indicate it came from outside the solar system.

MACS1149-JD1 galaxy

STAR START  Scientists find evidence that stars formed in a faraway galaxy (indicated by the boxes) when the universe was just 250 million years old.

exoplanet illustration

TEST KITCHEN  With so many worlds turning up outside our solar system, it’s time to add some chapters to the planetary production manual.

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