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New evidence for Planet Nine | | A new study concludes that a large, as-yet-unknown Planet Nine - an estimated 4 times the size of Earth and 10 times its mass - is influencing the behavior of an oddball object in the outer solar system. | | |
When was Earth’s 1st snow? | | A new study suggests our planet got its 1st snowfall about 2.4 billion years ago, after a lot of land rose swiftly from the sea and set off dramatic changes on Earth. | | |
When is the moon full? | | The moon is waxing toward full on this Sunday night. It'll still be a touch shy of full for most - but not all - of the world on Monday night. | | |
EarthSky News is taking Monday off to be with friends and family for the holiday. See you Tuesday! | | | | |