swap_horiz Abell 21 Alternatives
Looking for alternatives to Abell 21? Compare the top Nebula options ranked by our AI scoring system.
Abell 21
Abell 21, also known as the Medusa Nebula, is an ancient planetary nebula in the constellation Gemini. It was catalogued by astronomer George Abell in his 1966 survey of planetary nebulae. Located approximately 1,500 light-years from Earth, this stellar remnant exhibits a braided, filamentary struct...
apps Top Abell 21 Alternatives
The top alternative to Abell 21 in 2026 is Eskimo Nebula with a score of 8.7/10, followed by Eskimo Nebula (NGC 2392) (8.7) and Engraved Hourglass Nebula (8.7).
Eskimo Nebula
The Eskimo Nebula, formally designated NGC 2392, is a bright planetary nebula located in the Gemini constellation. Disco...
Eskimo Nebula (NGC 2392)
The Eskimo Nebula, formally NGC 2392, is a planetary nebula formed from a dying white dwarf star. Its distinctive double...
Engraved Hourglass Nebula
The Engraved Hourglass Nebula, formally MyCN 18, is a young planetary nebula located within the Musca constellation. It’...
Ghost of Saturn Nebula
The Ghost of Saturn Nebula, designated NGC 7009, is a planetary nebula located in the constellation of Aquarius. English...
Clown Face Nebula
The Clown Face Nebula, also designated NGC 2392 or the Eskimo Nebula, is a planetary nebula in the constellation Gemini...
Robin's Egg Nebula
Robin's Egg Nebula (NGC 1360) is a planetary nebula located in the southern constellation Fornax. Discovered by Friedric...
Blue Planetary Nebula
The Blue Planetary Nebula, designated NGC 3918, is a bright planetary nebula located in the southern constellation of Ce...
NGC 2371-2372
NGC 2371-2372 is a bipolar planetary nebula located in the constellation Gemini, recognized by its distinct, double-lobe...
Medusa Nebula
The Medusa Nebula (Abell 21) is a large planetary nebula located in the constellation Gemini, approximately 1,500 light-...
Abell 21 (Medusa Nebula)
Abell 21, commonly called the Medusa Nebula, is a large, faint planetary nebula in the constellation Gemini. It consists...
NGC 1514
NGC 1514, often referred to as the Crystal Ball Nebula, is a planetary nebula located in the constellation Taurus. It wa...
Double Bubble Nebula (NGC 2371)
Double Bubble Nebula (NGC 2371) is a bipolar planetary nebula located in the constellation Gemini. It was discovered by...
Sharpless 2-274
Sharpless 2-274, also known as the Medusa Nebula, is a large planetary nebula located in the constellation Gemini. It wa...
Jones 1
Jones 1 is a planetary nebula located in the constellation Pegasus, discovered by American astronomer Rebecca B. Jones i...
Sharpless 2-71
Sharpless 2-71 is an irregular planetary nebula in Aquila, discovered by Rudolph Minkowski in 1946 and studied for its u...
Cheerio Nebula
The Cheerio Nebula, catalogued as NGC 6337, is a planetary nebula in the constellation Scorpius. Its bright material for...
Fine-Ring Nebula
The Fine-Ring Nebula, also catalogued as Shapley 1, is a planetary nebula in the constellation Norma. Its nearly circula...
Magic Carpet Nebula
The Magic Carpet Nebula, NGC 7027, is a young planetary nebula in Cygnus whose dense, rapidly expanding gas surrounds a...
Raspberry Nebula
The Raspberry Nebula, IC 418, is a compact planetary nebula in Lepus whose intricate shell was imaged in fine detail by...
Pink Pillow Nebula
The Pink Pillow Nebula, NGC 7027, is a compact young planetary nebula in Cygnus, notable as one of the brightest such ob...
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