Constellations

Latest about Constellations

The "Demon Star" Algol is located in the Perseus constellation.

See the 'Demon Star' Algol wink in the night sky this week

By Joe Rao published

Algol, also known as the Demon Star, is quite possibly the most interesting star in the fall and winter skies, if you know when to look for its brightness changes.

Constellations
An image from the Cerro Tololo Inter-American Observatory shows streaks left by Starlink satellites.

Astronomers hope UN can help protect dark skies against megaconstellation threat

By Mike Wall published

Astronomers have studied the megaconstellation threat, alerted the public about it and helped satellite operators dim their spacecraft. But some are now taking another, potentially much bigger step.

Constellations
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Autumn's celestial sea: Catch these 'water' constellations in the night sky this fall

By Joe Rao last updated

Autumn officially arrives in the Northern Hemisphere on Tuesday, Sept. 22 at 9:31 a.m. EDT (1331 GMT). And consequently, our evening sky is now one in transition.

Constellations
This vertical panorama, composed of four images, shows a strong zodiacal light coming from the region where planet Venus was located, in the western sky of Pampilhosa da Serra, Dark Sky Aldeias do Xisto, Portugal.

Zodiacal Light meets the Milky Way in stunning night sky photo

By Miguel Claro published

The rare zodiacal light zodiacal light beams up at the Milky Way in this photo captured from Portugal's new "starlight tourism" destination.

Constellations
An image from the Cerro Tololo Inter-American Observatory shows streaks left by Starlink satellites.

Astronomers and SpaceX coming together to make Starlink megaconstellation less disruptive to science

By Meghan Bartels published

Astronomers are praising SpaceX's response to months of outcry over the visibility of the company's Starlink internet satellites from scientists dismayed by interference with observations.

Constellations
NASA’s Wide-field Infrared Survey Explorer, or WISE, shows a huge complex of star-forming clouds and stellar clusters found in the constellation Cygnus. Viewers can easily see the constellation Cygnus (the swan) in the northern hemisphere’s summer sky. The constellation also commonly goes by the name of the Northern Cross.

Cygnus constellation: Facts about the swan

By Adam Mann published

Honk if you love stars.

Constellations
Astrophotographer Miguel Claro took the image from São Miguel Island in the Azores on April 5, 2014.

International Dark Sky Week 2020 starts Sunday — here's how to celebrate online

By Elizabeth Howell published

Celebrate International Dark Sky Week from anywhere, with sessions streaming online starting Sunday (April 19).

Constellations
Auriga is a constellation of stars shaped like a pentagon. The brightest is Capella, which is actually a group of four stars.

Auriga constellation: Facts about the charioteer

By Adam Mann last updated

All about the constellation Auriga, the charioteer.

Constellations
A star chart from "A Handbook and Atlas of Astronomy" by W. Peck (published 1890).

What are star charts?

By Steve Fentress published

Star charts show the arrangement of stars in the sky, in a style that can be scientific, artistic or both, depending on the intended use.

Constellations
Zodiacal light glows in the sky at ESO’s Very Large Telescope (VLT) at Paranal Observatory in Chile. Image released Dec. 2, 2013.

Zodiacal light: How to spot the rare celestial glow in the night sky

By Joe Rao published

How to see the rare zodiacal light, the faint ghostly glow that appears when sunlight reflects off interplanetary debris likely left over from the formation of our solar system.

Constellations
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