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Posts by
Editors of EarthSky
Why is the Pleiades star cluster called the 7 Sisters?
To most people,, the Pleiades cluster looks like a tiny misty dipper of six little stars. Yet the Pleiades is sometimes called the Seven Sisters. Why?
September 14, 2023
Best twilight photos from our community
Enjoy twilight in some of the best photos shared by the EarthSky community. Have a great photo of your own to share? Send it to us!
August 27, 2023
The Great Moon Hoax of 1835: Would you have believed it?
On today's date in 1835 a newspaper claimed a famous astronomer had found life on the moon. The Great Moon Hoax was widely read and believed.
August 25, 2023
Pluto became a dwarf planet on today’s date
Pluto is the largest of many small bodies in the outer solar system. That's partly why it was demoted from major planet to dwarf planet in 2006.
August 24, 2023
Voyager 2 confirms Neptune’s rings on this date in 1989
NASA's Voyager 2 confirmed the discovery of Neptune's rings on August 22, 1989, when it took images of a faint, continuous ring system around the planet.
August 22, 2023
Observing meteors: Top 10 tips for the Perseids
The 2021 Perseid meteor shower is rising to its peak and many are observing meteors. Here are our best 10 tips for watching this shower, or any other!
August 1, 2023
Beluga Boat cam now live! And well worth watching
Click into these videos to see the Beluga Boat cam, from Manitoba's Churchill River. Belugas live, hunt and migrate in "pods." Hear their vocalizations!
July 27, 2023
How nuclear fusion works to let stars shine
Nuclear fusion powers our sun and is the energy source of the stars in our night sky. Here's how nuclear fusion works to make stars shine.
July 16, 2023
Know how to avoid rip currents! Watch this video
Before going to the ocean this year, you'll want to know how to avoid rip currents. Watch a video here to learn how to save yourself from these deadly currents.
June 8, 2023
What’s a safe distance from a supernova for Earth?
What's a safe distance from a supernova? To survive a supernova, recent data says Earth would have to be at least 160 light-years away from the exploding star.
May 26, 2023
