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Explanation: A lone tree stands in a quiet meadow in Guadalajara, Spain, silhouetted against the Cygnus region rising above like flames in the night sky. This deep night skyscape is a composite of exposures that reveals a range of brightness and color human eyes can't quite see on their own. Spanning over a thousand times the angular size of the full moon, Cygnus sets the sky afire with active star formation where clouds of gas and dust collapse under gravity until nuclear fusion ignites and new stars are born. These stars ionize the surrounding hydrogen gas, causing it to glow crimson, while tendrils of interstellar dust absorb some of that light and cast dark shadows across the sky. Cygnus is a trove of celestial treasures, notably the Veil, Crescent, and Pelican nebulae, as well as Cygnus X-1, the first confirmed black hole. Cygnus continues to yield fresh science, including a new three-dimensional model of the Cygnus Loop made possible by the Chandra X-ray Observatory.
Almost Hyperspace:
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: nebula - star
Publications with words: nebula - star
See also:
- APOD: 2026 March 6 Á The Astrosphere of HD 61005
- APOD: 2025 June 11 Á 25 Brightest Stars in the Night Sky
- APOD: 2025 March 18 Á LDN 1235: The Shark Nebula
- APOD: 2024 June 16 Á Animation: Black Hole Destroys Star
- APOD: 2024 June 11 Á Colorful Stars and Clouds near Rho Ophiuchi
- APOD: 2024 January 23 Á Deep Nebulas: From Seagull to California
- APOD: 2023 June 14 Á The Shark Nebula