Discover published sets by community

Nicolaus Copernicus formulated a heliocentric model of the solar system.

Johannes Kepler proposed the laws of planetary motion.

Apollo 11 landed the first humans on the Moon.

Aristotle presented evidence for a spherical Earth.

Copernicus published his heliocentric theory.

Galileo Galilei made improvements to the telescope.

Isaac Newton published 'Principia Mathematica', formulating the laws of motion and universal gravitation.

Discovery of Neptune based on predictions by Urbain Le Verrier.

Edwin Hubble discovered that the universe is expanding.

Huygens probe landed on Saturn's moon Titan.

The discovery of thousands of exoplanets.

Clyde Tombaugh discovered Pluto.

Galileo Galilei discovered the Galilean moons of Jupiter.

William Herschel discovered the planet Uranus.

Albert Einstein published the general theory of relativity.

The Voyager 2 probe flew past Neptune.

Yuri Gagarin became the first human in space.

NASA's Spirit Rover landed on Mars.

The International Astronomical Union redefined the term 'planet', which led to the reclassification of Pluto.