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Comet Halley, parent of 2 meteor showers
The famous comet Halley spawns both the May Eta Aquariid meteor shower and the October Orionid meteor shower.
May 18, 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
Lunar eclipse: 4 tips for watchers
A total lunar eclipse - a supermoon eclipse - is coming up on the night of May 15-16, 2022. Here are some tips for watching it.
May 15, 2022
The moon: 5 myths about our natural satellite
There are plenty of myths that surround the moon. Here are 5 of the most popular myths. How many of these myths have you been led to believe?
May 12, 2022
A total lunar eclipse looks red. Why?
The moon can look red during a total lunar eclipse because of sunlight that's filtered and refracted by Earth's atmosphere.
May 11, 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
EarthSky’s 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.
May 9, 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
Whoa! Tau Herculid meteors might be intense!
Tau Herculid meteors are typically seen around late May and early June. Recent calculations suggest they might produce a grand display in 2022.
May 5, 2022
Darn! Comet C/2021 O3 PanSTARRS has disintegrated
Astronomers hoped comet C/2021 O3 (PanSTARRS) would get bright after its April 2022 sweep near the sun. Instead, it disintegrated.
May 5, 2022
