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Cat's Eye Nebula. Composite image using optical images from the HST and X-ray data from the Chandra X-ray Observatory. The Cat's Eye Nebula (also known as NGC 6543 and Caldwell 6) is a planetary nebula in the northern constellation of Draco, discovered by William Herschel on February 15, 1786. It was the first planetary nebula whose spectrum ...
Glowing Eye Nebula or Dandelion Puffball Nebula: NGC 6751: 1863 6.5 11.9 Aquila: ... Cat's Eye Nebula: NGC 6543: 1786 3.3 ± 0.9 9.8B Draco: Little Ghost Nebula: NGC ...
Duo (デューオ, Dyūo) is a mysterious being from outer space, who in Mega Man Battle Network 4 and Rockman EXE Stream seeks to "cleanse" Earth of evil. In the games, Duo is the operating system of an asteroid set to destroy Earth. He was attracted to Earth by the spread of Dark Chips, which Nebula had instigated.
The Helix Nebula (also known as NGC 7293 or Caldwell 63) is a planetary nebula (PN) located in the constellation Aquarius. Discovered by Karl Ludwig Harding, most likely before 1824, this object is one of the closest of all the bright planetary nebulae to Earth. [3]
Nebulium was a proposed element found in astronomical observation of a nebula by William Huggins in 1864. The strong green emission lines of the Cat's Eye Nebula, discovered using spectroscopy, led to the postulation that an as yet unknown element was responsible for this emission. In 1927, Ira Sprague Bowen showed that the lines are emitted by ...
Veil Nebula. The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. [4] It constitutes the visible portions of the Cygnus Loop, [5] a supernova remnant, many portions of which have acquired their own individual names and catalogue identifiers. The source supernova was a star 20 times more massive than the Sun ...
NGC 6334, colloquially known as the Cat's Paw Nebula, or Gum 64, is an emission nebula and star-forming region located in the constellation Scorpius. [4] NGC 6334 was discovered by astronomer John Herschel in 1837, who observed it from the Cape of Good Hope in South Africa. [5]
Messier 94. Messier 94 (also known as NGC 4736, Cat's Eye Galaxy, Crocodile Eye Galaxy, or Croc's Eye Galaxy [7] [8]) is a spiral galaxy in the mid- northern constellation Canes Venatici. It was discovered by Pierre Méchain in 1781, [9] and catalogued by Charles Messier two days later. Although some references describe M94 as a barred spiral ...