Why doesn’t Earth have Trojan asteroids of its own? Large impacts in the early years of the solar system may be to blame. The post Where Did Earth’s Trojans Go? Ask the Moon appeared first on Sky & Telescope.
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Watch an Asteroid Race Across the Sky
The kilometer-wide, potentially hazardous asteroid 1994 PC1 will fly past Earth on January 18th. Good news on two counts: It won’t hit us, and it’s bright enough to see in a 4-inch telescope. The post Watch an Asteroid Race Across the Sky appeared first on Sky & Telescope.
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