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Frederick William Herschel (November 1738 to August 1822) was an astronomer, technical expert and composer. He first thought that Uranus was a star due to already searching for double stars.
The numbers of stars and their distances depended to some extent on their direction. This helped William Herschel to work out a model for the shape or the Milky Way Galaxy. In fact the shape he described is not too far from our modern ideas. Unfortunately he was limited by the knowledge and technology of his time. He decided, wrongly, that the Sun must be near the centre of the Galaxy.
Sir John Herschel 1792-1871 was the son of William Herschel and nephew of Caroline Herschel. He travelled to South Africa to catalogue the southern stars, but he also did a lot of work on photography and studied the flowers in the area, and also wrote on meteorology geography.
Although William Herschel is credited with discovering Uranus in 1781, later records showed that John Flamsteed viewed it more than once in 1690. However, he believed it was a star, and named it 34 Tauri. William Hershel was the first to clearly determine that Uranus is a planet.
Yes, stars can exist outside of a Galaxy, but the majority are within a galaxy.
The numbers of stars and their distances depended to some extent on their direction. This helped William Herschel to work out a model for the shape or the Milky Way Galaxy. In fact the shape he described is not too far from our modern ideas. Unfortunately he was limited by the knowledge and technology of his time. He decided, wrongly, that the Sun must be near the centre of the Galaxy.
Frederick William Herschel (November 1738 to August 1822) was an astronomer, technical expert and composer. He first thought that Uranus was a star due to already searching for double stars.
stars
The numbers of stars and their distances depended to some extent on their direction. This helped William Herschel to work out a model for the shape or the Milky Way Galaxy. In fact the shape he described is not too far from our modern ideas. Unfortunately he was limited by the knowledge and technology of his time. He decided, wrongly, that the Sun must be near the centre of the Galaxy.
William Herschel's interest in astronomy led him to begin looking at the planets and stars through his own self-built telescopes in May of 1773. He continued his study and research for 49 years until his death on 25 August 1822.
A galaxy is by a definition a group of stars. If there were no stars it could not be a galaxy.
Every galaxy contains stars, if that's what you mean. "Galaxy" means "big bunch of stars". No stars ===> no galaxy.
Elliptical Galaxy The Elliptical Galaxy has mostly old stars and blue stars are new stars.
Sir John Herschel 1792-1871 was the son of William Herschel and nephew of Caroline Herschel. He travelled to South Africa to catalogue the southern stars, but he also did a lot of work on photography and studied the flowers in the area, and also wrote on meteorology geography.
If it didn't have stars it wouldn't be a galaxy
This discovery led to the conclusion that the "red shift" is a property of stars moving away from us; i.e the galaxy is expanding.
Although William Herschel is credited with discovering Uranus in 1781, later records showed that John Flamsteed viewed it more than once in 1690. However, he believed it was a star, and named it 34 Tauri. William Hershel was the first to clearly determine that Uranus is a planet.