A daily update by email. Science news, great photos, sky alerts.
The constellation Chamaeleon the Chameleon is a dark patch of sky that lies deep in the Southern Hemisphere and is visible any night of the year.
A new study reveals Io's volcanoes have been erupting for billions of years, ever since the small moon of Jupiter 1st formed along with our solar system.
Watch for the moon in the morning sky - after sunrise - for a few days after full moon. Look west after the sun comes up!
Visible planets and night sky guide for April 2024. The moon is rising and setting later each night. See a daytime moon over your western horizon after sunrise.
April 24, 2024, sun news. Sun activity continues at a high level. We await the arrival of several CMEs. Could auroras be on their way? Good luck, aurora fans!
Cor Caroli is a binary star and the brightest star in the northern constellation Canes Venatici, the Hunting Dogs. Its name means Heart of Charles.
Voyager 1 has again begun sending an intelligible signal back to Earth. Scientists hope they can prompt the craft to resume sending science data.
The April 2024 full moon – on April 23 – is the Pink Moon and lies near the star Spica in the constellation Virgo. Find star charts here.
As the Northern Hemisphere enters spring, look for the Spring Triangle rising in the east, made up of bright beacons from three prominent constellations.
Warming temperatures are causing Antarctic meteorites to sink through melting ice. These samples of our solar system are keys to understanding earthly life.
Best time to watch the Lyrid meteor shower: before dawn on the morning of April 22. Sure, there's a bright moon out there. But you might see some!
Meteors in moonlight. It's not optimal, but it happens! Here's how to minimize the moon and optimize the Lyrid meteor shower in 2024.
April 22 is the date of Earth Day in part because of Arbor Day, an earlier observance. The focus for 2024 is "Planet vs. Plastics."
Comet Pons-Brooks makes its closest pass by the sun on April 21. Look for it after sunset in the west; it will soon slip into southern skies.
The first cicadas are starting to emerge this spring, with trillions more on the way. Cicadas may be loud, but they're basically harmless.
Happy Earth Day tomorrow! As a celebration of Earth, enjoy these photos, a collection of the 10 best Earth images from space. What are your favorites?
Is alien life purple? Researchers from Cornell University think that as far as alien worlds go, purple may be the new green.
The wildfire season forecast is out. Learn what regions have a higher risk and which ones have a lower risk for April to July 2024. Maps here.
Here's something you - or your kids - might have noticed: When you're in a moving car, earthly objects get left behind, but the moon seems to follow. Why?
Colorado State University has released its Atlantic hurricane outlook for the upcoming season. Read more here and get the list of 2024's hurricane names.
2024 EarthSky Fundraiser
Any amount will help us reach our goal.
Would you consider
donating?
If you've already donated, we apologize for the popup and greatly appreciate your support.