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Editors of EarthSky
Meet Hamal, an ancient equinox star, in Aries the Ram
Meet Hamal, the brightest star in Aries, and learn why people sometimes refer to the March equinox point as the First Point in Aries.
November 18, 2025
See the Summer Triangle in the northern autumn sky
Look west in the evening to see the Summer Triangle in autumn. Its 3 bright stars - Vega, Deneb and Altair - are in 3 different constellations.
November 16, 2025
Amazing aurora photos capture the ‘sky on fire’
Stargazers saw vivid reds and greens paint the sky the night of November 11, 2025, as auroras dipped into southern-US latitudes and beyond. Aurora photos here!
November 12, 2025
Halley’s Comet is Edmond Halley’s namesake. Happy birthday, Edmond!
Astronomer Edmond Halley is famous for predicting the return of the comet that we now know as Halley's Comet. Edmond was born on November 8, 1656.
November 7, 2025
Almach, a quadruple star system in Andromeda
With the eye alone, Almach looks like a single star. Through a telescope, it looks like a colorful duo. But Almach is really a 4-star system.
November 6, 2025
November birthstone: Choose either topaz or citrine
The November birthstone, topaz, comes in lots of colors. It's a much-loved gemstone in jewelry, with myths that date to ancient times. Or choose citrine.
November 2, 2025
Algol the Demon Star, named for its strange behavior
What's the scariest star in all the heavens? It's Algol the Demon Star, and you can see it on autumn evenings. Click in to learn the secret of Algol's creepiness!
October 31, 2025
Hurricane Melissa hits Jamaica and Cuba, heads toward Bermuda
Category 5 Hurricane Melissa made landfall in Jamaica just after 1:00 p.m. EDT on October 28, 2025. Some 70% of the country is still without power.
October 29, 2025
Comet Halley is the parent of 2 meteor showers
The famous comet Halley spawns both the October Orionid meteor shower and the May Eta Aquariid meteor shower. It'll return to the inner solar system in 2061.
October 17, 2025
Large and Small Magellanic Clouds shine in southern skies
Have you seen the Magellanic Clouds? These 2 satellite galaxies of the Milky Way are noticeable features in the skies of the Southern Hemisphere.
October 14, 2025
