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Posts by
Editors of EarthSky
Earliest sunrises (or sunsets) come before June solstice
If you live in the Northern Hemisphere, your earliest sunrises of the year are happening around now. Southern Hemisphere? Your earliest sunsets are around now.
June 10, 2022
Meteor shower guide: Next up, summer meteors
Your meteor shower guide for 2022 and early 2023. There are some good ones! Next up ... the Delta Aquariids and the Perseids in late July and August.
June 9, 2022
Fireflies: How and why they light up
A firefly's familiar glow is caused by a chemical reaction. Why and how fireflies light up here, plus many wonderful firefly photos.
June 8, 2022
Constellations and signs: what’s the difference?
What is the difference between signs of the zodiac and constellations of the zodiac? Astronomer Guy Ottewell illustrates and discusses this difference.
June 4, 2022
Hurricane names for 2022: Is yours on the list?
The World Meteorological Organization chooses hurricane names several years in advance. Find hurricane names for 2022 here. Is your name on the list?
May 25, 2022
Today's Image
Lunar eclipse photos, via EarthSky’s community
The May 15-16, 2022, total eclipse of the moon is over. Now, check out these beautiful lunar eclipse photos from EarthSky's community members!
May 16, 2022
Total lunar eclipse – a supermoon eclipse – on May 15-16, 2022
A 90-minute total lunar eclipse on Sunday, May 15-16, 2022. It's seen across much of Earth, best from the Americas and western Africa.
May 15, 2022
Retrograde motion can be real or illusory
Retrograde motion of Jupiter or Mars or Saturn in our sky is an illusion, a trick of perspective. But there's a real retrograde motion, too.
May 10, 2022
What’s a constellation? What’s an asterism?
Constellations and asterisms are patterns of stars. Some asterisms consist of stars from different constellations, and some are part of one constellation.
May 6, 2022
How Pluto got its name
Eleven-year-old Venetia Burney named Pluto for a god of the underworld. The name also honored Percival Lowell, the pioneering astronomer.
May 1, 2022
