Ample warning for supervolcanos? | | Yellowstone's supervolcano won't erupt anytime soon. Neither will other similar systems around the world. A new study says we'll see many warning signs before a supervolcano erupts. | | |
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Halley's Comet's 2 meteor showers | | It's because comets like Halley are so crumbly that we see annual meteor showers. One shower spawned by this comet is going on now. Another is visible in October. | | |
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