Top Results for Abell

Abell 33, sometimes called the Diamond Ring Nebula, is a planetary nebula located in the constellation Hydra. The nebula appears almost perfectly spherical and is illuminated by a central white dwarf, the remnant of the original star. The "diamond ring" effect arises from the chance alignment of a f...

Abell 39 is a planetary nebula situated within the constellation of Hercules. It’s notable due to its remarkably symmetrical, almost perfectly spherical shape – a rare characteristic among these objects. Discovered by George Abell in 1966, it provides astronomers with a visual example of stellar evo...

The Medusa Nebula (Abell 21) is a large planetary nebula located in the constellation Gemini, approximately 1,500 light-years from Earth. It was discovered by George O. Abell in 1955 and named for its filaments that resemble the snakes in Medusa's hair from Greek mythology. As an older planetary neb...

Abell 70 (also known as PN A66 70) is a planetary nebula located in the constellation Aquila. It is notable for the presence of a background galaxy that appears superimposed on its rim, creating a distinctive diamond-shaped appearance in telescope images. The nebula contains a binary central star sy...

Abell 65 is a faint bipolar planetary nebula located in the constellation Sagittarius. It is highly notable for its elongated, ring-like structure and for containing a close binary central star system at its core. The two stars in this system orbit each other with an exceptionally short period of ap...

Abell 31 is a large, faint planetary nebula in the constellation Cancer and is also cataloged as Sh2-290. It consists of ionized gas expelled by a dying star, with an old, diffuse shell that is interacting with and dispersing into the surrounding interstellar medium. Because its light is spread acro...

Abell 36 is a faint planetary nebula located in the constellation Virgo, cataloged by astronomer George O. Abell in 1955. It is distinguished by its barrel-shaped structure, which represents the expelled outer layers of a dying star. Estimated to be approximately 10,000 years old, the nebula is ofte...

Abell 46 is an ancient planetary nebula in the constellation Hercules, notable for its faint, highly elongated ring of ionized gas and central binary star.

Abell 24 is a large, faint planetary nebula in Canis Minor, cataloged by American astronomer George Abell in his 1966 planetary-nebula survey.

Abell 63 is a planetary nebula in the constellation Sagitta. Its central system includes the eclipsing binary star UU Sagittae, whose connection with the nebula was identified in the twentieth century. An eclipsing binary changes in observed brightness when one star passes in front of the other from...

Abell 74 is a planetary nebula in the constellation Vulpecula. It is an extended and faint cloud of ionized gas produced during the late evolution of a star, rather than a galaxy or a region where new stars are forming. Abell 74 is difficult to observe because its light is spread across a large area...

Abell 20 is an ancient planetary nebula in Orion, cataloged by George Abell in 1966, notable for its highly evolved, faint structure.

Abell 82 is a planetary nebula included in the catalog compiled by astronomer George Abell from astronomical survey plates. It is a faint, extended shell of gas in the constellation Cassiopeia, formed from material expelled by a dying low- or intermediate-mass star. The object is difficult to observ...

Abell 84 is a planetary nebula listed in the Abell catalogue of planetary nebulae compiled from astronomical survey photographs. It is located in the constellation Cassiopeia and consists of gas expelled by a dying star, illuminated by the hot stellar remnant at its center. Like many Abell planetary...