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Posts by
Editors of EarthSky
The Local Group is our galactic neighborhood
What is the Local Group? It's a collection of the nearest galaxies in space. Read more about these neighbors of our home Milky Way galaxy.
October 24, 2023
Riding Light: Tour the solar system at light speed
Tour the solar system at the speed of light in the video Riding Light. This video represents a photon leaving the sun and traveling past the inner planets to Jupiter.
October 15, 2023
Annular solar eclipse today: All you need to know
The October 14, 2023 annular solar eclipse will cross the US, Mexico, Central America, Colombia and Brazil. Maps and more here.
October 14, 2023
Which bird migrates the farthest?
Which bird migrates the farthest? Over its lifetime of about 30 years, an Arctic tern can fly nearly 3 times the distance from the Earth to the moon.
October 5, 2023
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
