Don't call it a swimming dinosaur, scientists say. The newly discovered ichthyosaur looks much like a dolphin or shark and swam Earth's seas for millions of years.
Voyager 2 in 1989 - and Hubble Space Telescope in 1994 - saw similar features. But this dark spot, or vortex, is the first seen on Neptune in the 21st century.
Iridescent clouds appear in the same direction as the sun. Rainbow-like colors appear irregularly over the clouds in the form of colored edges, spots and bands.
Imagine seeing 2 suns in your sky. Like the fictional planet Tatooine in Star Wars, some planets do orbit 2 stars. Kepler-164 is the largest yet discovered.
See the Mars rover Curiosity, nestled on Mars' surface? The sharp-eyed HiRISE camera aboard the Mars Reconnaissance Orbiter caught the view from space.
Deborah Byrd (asteroid 3505 Byrd) helps edit EarthSky.org and is a frequent host of EarthSky videos. Deborah created the EarthSky radio series in 1991 and founded EarthSky.org in 1994. Prior to that, she had worked for the University of Texas McDonald Observatory since 1976, and created and produced their Star Date radio series. She has won a galaxy of awards from the broadcasting and science communities, including having an asteroid named in her honor in 1990, a Public Service Award from the National Science Board in 2003, and the Education Prize from the American Astronomical Society in 2020. A science communicator and educator since 1976, Byrd believes in science as a force for good in the world and a vital tool for the 21st century. "Being an EarthSky editor is like hosting a big global party for cool nature-lovers," she says.