Astronomy Picture of the Day · January 18, 2021

The Medulla Nebula Supernova Remnant

The Astronomy Picture of the Day for January 18, 2021 is “The Medulla Nebula Supernova Remnant,” an image. The picture is copyrighted by its creator (Image Credit & Copyright: Russell Croman). The original explanation runs about 180 words.

From the explanation

“What powers this unusual nebula? CTB-1 is the expanding gas shell that was left when a massive star toward the constellation of Cassiopeia exploded about 10,000 years ago.”

— APOD editors, January 18, 2021

Read the full explanation on science.nasa.gov

At a glance

Date: January 18, 2021
Type: Image
Credit: Credit: Image Credit & Copyright: Russell Croman
Copyright: Copyrighted by the credited creator. Ask the copyright holder before reusing it.
Explanation length: About 180 words

All of January 2021 → · 2021 by month → · Full archive since 1995 →

Topics in this entry

Nebulae Supernovae

Topics are matched from words in the title and explanation.

On this day: January 18 in other years

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Source

Astronomy Picture of the Day, January 18, 2021 — science.nasa.gov/image-article/apod-2021-january-18-the-medulla-nebula-supernova-remnant

Copy taken Oct 28, 2026, 2:39 AM EDT. The image and explanation belong to their creators. OpenOrbit is not affiliated with or endorsed by NASA.