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EarthSky Voices

How do fireworks get their beautiful colors?

The red, orange, yellow, green, blue and purple colors exploding in the night sky during a fireworks festival are created by the use of metal salts.

EarthSky Voices

July 3, 2026

Comet 3I/ATLAS over 10 billion years old, Webb finds

The Webb space telescope has found chemical clues to the origin of interstellar comet 3I/ATLAS. It appears to be several times older than our solar system.

EarthSky Voices

June 24, 2026

Asteroid or comet? Meteor or meteorite? Answers here

A bright light zips through the night sky. But what is it? Asteroid or comet? Find the answers here and share your knowledge with your friends and family.

EarthSky Voices

June 23, 2026

Space

No crisis? Universe’s expansion is accelerating, study says

Rebutting a surprising paper from 2025, a new study has found that the universe's expansion is accelerating after all. Crisis averted?

EarthSky Voices

June 18, 2026

Meteors in moonlight: 6 tips for watching

Meteors in moonlight: it's not optimal, but it's happening for the Delta Aquariids in 2026! Here are 6 tips for watching this year's shower.

EarthSky Voices

June 15, 2026

Meteor showers are here! 10 easy tips for watching

Meteor showers are unpredictable but nothing beats them for a fun and relaxing time under the stars. Here are our 10 tips to optimize your meteor viewing time.

EarthSky Voices

June 15, 2026

Did galaxy-killing wind shape the early universe?

Winds from intense star formation in the early universe swept away material for future stars. This galaxy-killing wind led to the early deaths of galaxies.

EarthSky Voices

June 12, 2026

Dark matter: How new telescopes might help us find it

New telescopes might bring scientists closer to detecting dark matter. They could soon reveal signals that finally let us understand this mysterious substance.

EarthSky Voices

June 11, 2026

Earth