Scientists have long said that Saturn's glorious rings may be only temporary. New research confirms a "ring rain" onto Saturn that'll leave the planet ringless in 300 million years, or sooner.
A new study suggests that a tsunami of cosmic energy from a supernova killed off large ocean animals - including the huge megalodon shark - 2.6 million years ago.
On December 21, NASA's Juno spacecraft will make its 16th science pass over the cloud tops of Jupiter, marking the halfway point in the solar-powered spacecraft's prime mission.
This year’s report shows that the Arctic region experienced the 2nd-warmest air temperatures ever recorded, the 2nd-lowest overall sea-ice coverage, and lowest recorded winter ice in the Bering Sea.
Eleanor Imster has helped write and edit EarthSky since 1995. She was an integral part of the award-winning EarthSky radio series almost since it began until it ended in 2013. She and her husband live in Tennessee, where they enjoy guitar playing and singing. They have 2 grown sons.