Herschel published catalogues of nebulae in 1802 (2,500 objects) and in 1820 (5,000 objects). The resolving power of the Herschel telescopes revealed that many objects called nebulae in the Messier catalogue were actually clusters of stars. On 13 March 1781 while making observations he made ...
Nebulae are also amongst the biggest structures in the universe. They can be more than hundreds of light-years across, with their diffuse clouds of gas forming into imaginative and colorful shapes, allowing astronomers to let their imaginations run wild when naming some of them. However, if ther...
A decade before, the American astronomer Vesto Slipher had provided the first evidence that the light from many of these nebulae was strongly red-shifted, indicative of high recession velocities.Hubble's name is most widely recognized for the Hubble Space Telescope which was ...
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The cosmic scenery of the universe consists of star clusters, groups of very numerous stars that appear to be a cloud; nebulae, glowing clouds of gas or dust, and; galaxy clusters and superclusters. Basically, the universe is all the existing space-time and all its contents...
My focus is on galactic emission nebulae as these are what NV excels at and which are poorly known about. Anyone who is using an IEE should have a hydrogen alpha filter! I have found galaxies to be a mixed bag, not much food unless they have lots of hydrogen emission eg m82. Globs ...
Known for: Organized a cataloging system of nebulae and stars Discovered more than a dozen comets and observed many others, including the return of Halley’s Comet. His Messier Catalogue organized many objects in the sky into a system that is still used by astronomers today. Joseph-Louis Lagran...
The constellation is home to HD 140283, popularly known as Methuselah Star, one of the oldest stars known. It also hosts HE 1523-0901, a red giant star even older than Methuselah. Facts, location and map Libra is the 29th constellation in size, occupying an area of 538 square degrees. ...
It also has 13 stars with known planets. The brightest star in the constellation is Antares, Alpha Scorpii, with an apparent magnitude of 0.96. Antares is also one of the brightest stars in the sky. There are two meteor showers associated with the constellation: the Alpha Scorpiids and the...
Burnham-shaped like Greek letter Pi -NGC 36 Opn CL CYG 4.6 11 32' III 2 p 30 6.8 Large but loose cluster -NGC 37 2 Stars UMA 9 - D* 9 & 9.3 mag 50'' sep; No nebulae -NGC 38 Opn CL CMA 4.5 12 38' II 3 m 80 6.9 150 members to 13 mag;orange * near center -NGC 39...