Arctic Sea Ice Day is today, July 15, 2025. And you can participate! Snap pics from a Beluga Boat with attached live cams and classify the whale bits you see.
Researchers discovered what they believe is a dark galaxy - made almost entirely of dark matter - thanks to the visible light of globular clusters around it.
Kelly Kizer Whitt - EarthSky’s nature and travel vlogger on YouTube - 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.