Notable Discoveries
See also: Planets beyond Neptune- The dwarf planet Pluto by Clyde Tombaugh in 1930.
- Large recessional velocities of galaxies by Vesto Melvin Slipher between 1912 and 1914 (that led ultimately to the realization our universe is expanding).
- Co-discovery of the rings of Uranus in 1977.
- The periodic variation in the activity of Comet Halley during the 1985/1986 apparition.
- The three largest known stars.
- The atmosphere of Pluto.
- Accurate orbits for two of Pluto's moons: Nix and Hydra.
- Oxygen on Jupiter's satellite Ganymede.
- Carbon dioxide ice on three Uranian satellites.
- The first Trojan of Neptune.
- Evidence that the atmosphere of HD 209458 b contains water vapor.
Read more about this topic: Lowell Observatory
Famous quotes containing the words notable and/or discoveries:
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“Furnished as all Europe now is with Academies of Science, with nice instruments and the spirit of experiment, the progress of human knowledge will be rapid and discoveries made of which we have at present no conception. I begin to be almost sorry I was born so soon, since I cannot have the happiness of knowing what will be known a hundred years hence.”
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