After 13 years of grinding and polishing, the Palomar Observatory mirror is completed at Caltech.
All posts tagged ‘Mount Palomar’
1962: A nearly botched observation of a distant radio source leads to the identification of the first-known quasi-stellar astronomical object, or quasar. Until the development of radio astronomy in the 1940s, our knowledge of the universe outside our own solar system was pretty much restricted to objects that emitted light in or near the visible [...]
Astronomer Edwin Hubble announces that the spiral nebula Andromeda is actually a galaxy and that the Milky Way is just one of many galaxies in the universe.