Discover
Scientific Discoveries
The great discoveries in the history of astronomy, in chronological order.
22 entries.
- Discovery
Precession of the Equinoxes
c. 130 BCE
- Discovery
The Galilean Moons of Jupiter
1610 CE
- Discovery
The Phases of Venus
1610 CE
- Discovery
The Discovery of Titan
1655 CE
- Discovery
The Nature of Saturn's Rings
1659 CE
- Discovery
The Periodicity of Halley's Comet
1705 CE
- Discovery
The Discovery of Uranus
1781 CE
- Discovery
The Prediction and Discovery of Neptune
1846 CE
- Discovery
The Cepheid Period–Luminosity Relation
1912 CE
- Discovery
What Stars Are Made Of
1925 CE
- Discovery
The Expansion of the Universe
1929 CE
- Discovery
Evidence for Dark Matter
1933 CE
- Discovery
The Discovery of Quasars
1963 CE
- Discovery
The Cosmic Microwave Background
1965 CE
- Discovery
The Discovery of Pulsars
1967 CE
- Discovery
The First Kuiper Belt Object
1992 CE
- Discovery
The First Exoplanet Around a Sun-like Star
1995 CE
- Discovery
The Accelerating Universe
1998 CE
- Discovery
The First Detection of Gravitational Waves
2015 CE
- Discovery
The First Image of a Black Hole
2019 CE
- Discovery
The Milky Way's Central Black Hole
c. 2020 CE
- Discovery
JWST's First Science Images
2022 CE