A new study found that astronaut's brains need a three-year break after long missions. Missions of up to six months expand the ventricles in astronauts' brains.
The Parker Solar Probe has looked into a coronal hole, helping to identify the source of the fast solar wind as magnetic reconnection of the solar field lines.
A new image from the James Webb Space Telescope captured more than 45,000 baby galaxies, at a time when our universe was less than 600 million years old.
Spot Mars and the Beehive cluster together on June 1 and 2, 2023. Use binoculars to see the starry cluster making a sparkling background for the red planet.
May 28, 2023, would be the 93rd birthday of Frank Drake. He formulated the famous Drake equation in 1961, as a tool for contemplating alien civilizations.
Kelly Kizer Whitt writes and edits some of the most fascinating stories at EarthSky.org. She's been writing about science, with a focus on astronomy, for decades. She began her career at Astronomy Magazine and made regular contributions to other outlets, including AstronomyToday and the Sierra Club. She has nine published books, including a children's picture book, Solar System Forecast, and a young adult dystopian novel, A Different Sky.