Discover published sets by community

Galileo Galilei improved the design of the telescope and made groundbreaking astronomical observations, including the discovery of the four largest moons of Jupiter, which played a key role in the acceptance of the heliocentric model of the solar system.

Voyager 2 made its closest approach to Neptune, providing the first detailed images of the planet and its moons, leading to a greater understanding of the outer solar system.

The first humans, Neil Armstrong and Buzz Aldrin, landed on the Moon, marking a significant milestone in space exploration and the human understanding of our closest celestial neighbor.

The Hubble Space Telescope was launched into low Earth orbit, greatly improving the resolution and sensitivity of astronomical observations and leading to numerous significant discoveries about the universe.

During a solar eclipse, Arthur Eddington observed the bending of starlight by the sun's gravity, providing one of the first empirical validations of Einstein's General Theory of Relativity.

Edwin Hubble discovered that distant galaxies are moving away from us, and that their speed is proportional to their distance, leading to the understanding that the Universe is expanding.

Neptune was discovered by Johann Galle using mathematical predictions by Urbain Le Verrier and John Couch Adams, marking the first planet found by mathematical prediction rather than empirical observation.

Isaac Newton published his work outlining the laws of motion and universal gravitation, which became the cornerstone of classical physics and remained unchallenged until the development of Einstein's relativity.

Albert Einstein published his theory outlining the relationship between space and time, introducing the equation $E = mc^2$, which has profound implications for the understanding of the universe at large scales.