Visible planets and night sky guide: June 2022

In July, you can still see the lineup of 5 planets in the morning sky for a short time. And don't miss the Delta Aquariids meteors. Your night sky guide, here!

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.

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.

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.

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?

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.

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.

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.

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.

The Bortle survival limit for comets

Astronomers learn even from failed comets. The Bortle survival limit gives us a prediction as to whether a comet will survive perihelion.