Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Posts by
Editors of EarthSky
Use the Big Dipper to find Polaris, the North Star
Do you know how to find the North Star? The 2 outer stars in the bowl of the Big Dipper point to Polaris, the North Star. It's quick and easy!
March 16, 2025
Uranus discovered by accident on this date in 1781
William Herschel spotted Uranus in 1781 during a routine survey of the stars. It was the 1st new planet found since ancient times.
March 13, 2025
The 1st eclipse season of 2025 starts this week
One of the many noticeable cycles in the heavens is an eclipse season. The 1st eclipse season of 2025 starts with a total lunar eclipse on March 13-14, 2025.
March 9, 2025
Mercury farthest from sunset on March 7-8 and near Venus
The sun's innermost planet, Mercury, will lie 18 degrees from the sunset on March 7-8, 2025. Look for it about 40 minutes after sunset.
March 4, 2025
March birthstone: Beautiful blue or blood red?
Happy birthday to all you March babies! Take your pick: your March birthstone can be the blue aquamarine or the red-speckled bloodstone.
March 2, 2025
Look for the colors of the stars
Winter is the perfect time for noticing the colors of the stars. Start with Capella, then move on to Taurus and Orion. Check out some colorful stars tonight!
February 25, 2025
See the zodiacal light in dark skies beginning around now
The zodiacal light is an eerie light extending up from the horizon. During the months around the March equinox is a good time to see it. How to see it, here.
February 16, 2025
Full moon names of the month and by the season
Lists of common full moon names - both by month and by season - for North America. And a word about full moon names in the Southern Hemisphere.
February 13, 2025
The February birthstone is the purple amethyst
Are you a February baby? Here's some cool info about your February birthstone, the amethyst. Read the lore of this purple stone, a variety of quartz.
February 4, 2025
Happy Groundhog Day! Watch the festivities in Pennsylvania
The predicted high for Punxsutawney, Pennsylvania, on February 2 is 41 degrees F (5 C) and cloudy. Will Phil see his shadow? Watch live here.
February 2, 2025
