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A nebula that is visible to the human eye from Earth would appear larger, but no brighter, from close by. [6] The Orion Nebula, the brightest nebula in the sky and occupying an area twice the angular diameter of the full Moon, can be viewed with the naked eye but was missed by early astronomers. [7]
NGC 6781, also known as the Snowglobe Nebula, [5] is a planetary nebula located in the equatorial constellation of Aquila, about 2.5° east-northeast of the 5th magnitude star 19 Aquilae. [3] It was discovered July 30, 1788 by the Anglo-German astronomer William Herschel. [6] The nebula lies at a distance of 1,500 ly from the Sun. [2]
The Boomerang Nebula is a protoplanetary nebula [2] located 5,000 light-years from Earth in the constellation Centaurus. It is also known as the Bow Tie Nebula and catalogued as LEDA 3074547. [3] The nebula's temperature is measured at 1 K (−272.15 °C; −457.87 °F) making it the coolest natural place currently known in the Universe. [4] [5 ...
Dangerous Visions is an anthology of science fiction short stories edited by American writer Harlan Ellison and illustrated by Leo and Diane Dillon. It was published in 1967 and contained 33 stories, none of which had been previously published.
This video clip shows a visualization of the three-dimensional structure of the Pillars of Creation. Closer view of one pillar. Pillars of Creation is a photograph taken by the Hubble Space Telescope of elephant trunks of interstellar gas and dust in the Eagle Nebula, in the Serpens constellation, some 6,500–7,000 light-years (2,000–2,100 pc; 61–66 Em) from Earth. [1]
The southernmost part of the nebula complex Sh2-109, with the prominence of the dark nebula B147. The Cygnus Complex appears to be related to a large number of structures in which star formation phenomena are extremely intense and in which the dynamics of the interstellar medium are quite violent.
Nebula Awards 25 is an anthology of award winning science fiction short works edited by Michael Bishop, the third of three successive volumes published under his editorship. It was first published in hardcover and trade paperback by Harcourt Brace Jovanovich in April 1991.
Nebula Award Stories Seventeen Nebula Award Stories Sixteen is an anthology of award winning science fiction short works edited by Jerry Pournelle and John F. Carr . It was first published in hardcover by Holt, Rinehart and Winston in August 1982; a paperback edition was issued by Bantam Books in September 1983.