Elliptical Galaxies

Black Holes
Black Holes
Black Holes On December 3, 1995, astronomers using the Hubble Space Telescope identified a black hole in the galaxy NGC 4621, located 100 million light-years from Earth in the direction of the constellation Virgo. This is the second super-massive black hole that astronomers using the Hubble Space Telescope have found. Astronomers believe that the mass of this black hole is about 1.2 billion times the mass of our sun, but it is concentrated in a space that is not any bigger than our solar system
Astronomers
Astronomers
Astronomers Part One Brief Descriptions of the Following Astronomers: Walter Baade : Baade was a German-born American, whose work gave new estimates for the age and size of the universe. During the wartime, blackouts aided his observatons and allowed him to indentify and classify stars in a new and useful way, and led him to increase and improve Hubble's values for the size and age of the universe (to the great relief of geologists.) He also worked on supernovae and radiostars. Milton Humason :
Edwin Hubble
Edwin Hubble
Edwin Hubble Edwin Powell Hubble: Great Astronomer of the 19th Century Twinkle, twinkle little star, How I wonder what you are! Up above the world so high, Like a diamond in the sky (Gardner 98). Stars are a marvelous wonder to many people, that is why some people spend most of their lives wondering what is above the world so high (Gardner 98). These people study and map the little twinkling stars in order to get a better meaning of them; they are astronomers. Great astronomers like Edwin Hubble