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Explanation: A dark wolf lies in gum. No, this isnÁt a riddle! Today's image features the Dark Wolf Nebula (SandqvistÁLindroos 17), a spooky dust cloud embedded within the Gum 55 (RCW 113) Nebula in the Scorpius constellation. While dust is a pest to us, it serves a vital role in creating the necessary conditions for stars to be born. The Dark Wolf absorbs the intense ultraviolet and visible light emitted by young stars in Gum 55 and re-emits it at longer, mainly infrared, wavelengths. This prevents the higher energy light from heating up the gas in the region. When a region of gas is cool enough, gravity takes over and causes the gas to collapse into a star. Not only does dust act as an interstellar thermostat, but it is also the meet-cute for single hydrogen atoms forming molecular hydrogen, the building block for stars. The seemingly sinister Dark Wolf is actually a harbinger of cosmic life.
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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: Saturn - Neptune
Publications with words: Saturn - Neptune
See also:
- APOD: 2026 May 6 Á The Retrograde Dance of Saturn and Neptune
- APOD: 2025 October 5 Á A Long Storm System on Saturn
- APOD: 2025 November 16 Á Crossing Saturns Ring Plane
- APOD: 2025 September 25 Á Saturn Opposite the Sun
- APOD: 2025 September 22 Á Equinox at Saturn
- APOD: 2025 February 23 Á Saturn in Infrared from Cassini
- APOD: 2024 December 8 Á Aurora around Saturns North Pole