NASA's Mars Curiosity rover drove about 197 feet (60 meters) over this past weekend to a site called Lake Orcadie. This was Curiosity's longest drive since experiencing a memory anomaly on September 15.
If you encountered an elephant bird today, it would be hard to miss. At over 10 feet (3 meters) tall, the extinct bird is the largest known to science. But while you looked up in awe, it’s likely that the big bird wouldn't be looking back.
The ozone hole that forms in the upper atmosphere over Antarctica each September was slightly above average size in 2018, according to NOAA and NASA scientists.
Astronomers caught a glimpse of Phaethon - the bizarre blue asteroid responsible for the Geminid meteor shower - and found it even more enigmatic than they’d thought.
Thank you to Grafixartphoto for this image of the moon reflected in a glassy lake in Torres del Paine, a national park encompassing mountains, glaciers, lakes, and rivers in southern Chilean Patagonia on October 23, 2018.
For 20 years, researchers counting dead salmon tossed them on the side of a shallow creek. The result, it turns out, was healthier, faster-growing trees. You'll enjoy this video.
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.