The Aral Sea was once the world's 4th-largest lake. But in the 1960s, the Soviet Union diverted 2 major rivers to irrigate farmland, and the Aral Sea has been slowly disappearing ever since.
Astronomers now have the 1st direct evidence that white dwarf stars form crystal cores. Our sun is destined to become a crystal white dwarf in about 10 billion years.
Abhijit Patil created this long-exposure image at Rocky Gorge in New Hampshire's White Mountain National Forest on January 5, 2019. "It's a tricky spot to shoot during the night," he wrote, "but the night views are spectacular and worth the risk."
A new computer simulation shows the Large Magellanic Cloud is hurtling toward our galaxy on a collision course. Could the collision knock our solar system out of the Milky Way?
From the months-long eruption of Hawaii's Kilauea Volcano to a strange object discovered on the surface of Mars - and more - here's a quick roundup of the stories our readers enjoyed most in 2018.
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.