Astronomy Timeline by xottix

300 BCE

taileak9_ — 2023-12-19 12:22:10 UTC

The Greek astronomer Hipparchus developed the first known star catalog, documenting the positions and brightness of over 1,000 stars.

Around 600 BCE

taileak9_ — 2023-12-19 12:24:06 UTC

The Greeks, including philosophers like Thales and Pythagoras, began observing and theorizing about the stars and planets.

1543

taileak9_ — 2023-12-19 12:25:05 UTC

Nicolaus Copernicus proposed the heliocentric model, suggesting that the Earth revolves around the Sun.

1609

taileak9_ — 2023-12-19 12:26:05 UTC

Galileo Galilei made significant astronomical observations using his telescope, including the phases of Venus and the moons of Jupiter.

1687

taileak9_ — 2023-12-19 12:26:56 UTC

Isaac Newton published his laws of motion and universal gravitation, revolutionizing our understanding of celestial mechanics.

1781

taileak9_ — 2023-12-19 12:28:06 UTC

William Herschel discovered Uranus, expanding our understanding of the solar system.

1838

taileak9_ — 2023-12-19 12:28:49 UTC

Friedrich Bessel measured the first stellar parallax, providing evidence for the vast distances between stars.

1915

taileak9_ — 2023-12-19 12:29:25 UTC

Albert Einstein formulated his theory of general relativity, which revolutionized our understanding of gravity and its effects on space and time.

1919

taileak9_ — 2023-12-19 12:30:35 UTC

Arthur Eddington's observations during a solar eclipse confirmed Einstein's theory of general relativity.

1969

taileak9_ — 2023-12-19 12:31:06 UTC

The Apollo 11 mission successfully landed humans on the Moon, marking a significant milestone in space exploration.

1990

taileak9_ — 2023-12-19 12:31:37 UTC

The Hubble Space Telescope was launched, capturing stunning images and revolutionizing our understanding of the universe.

2015

taileak9_ — 2023-12-19 12:32:29 UTC

The New Horizons spacecraft flew by Pluto, providing detailed images and data about the dwarf planet.

2023

taileak9_ — 2023-12-19 12:33:11 UTC

Astronomical research continues to thrive, with ongoing missions, discoveries, and advancements in technology.

380 BCE

taileak9_ — 2023-12-19 12:35:34 UTC

An astronomer named Eudoxus created the first model of a geocentric universe. Eudoxus designed his model of the universe as a series of cosmic spheres containing the stars, the sun, and the moon all built around the Earth at its center.

1605

taileak9_ — 2023-12-19 12:38:56 UTC

Johannes Kepler discovered that the planets orbit about the Sun in an elliptical and not circular motion, and so proposed his three laws of planetary motion.

1977

taileak9_ — 2023-12-19 12:41:11 UTC

Voyager 1 spacecraft launched to explore the outer solar system.

1798

taileak9_ — 2023-12-19 12:46:25 UTC

Laplace proposes the concept of Black Holes.

1937

taileak9_ — 2023-12-19 12:47:20 UTC

First radio telescope built in the USA by Grote Reber.

2000

taileak9_ — 2023-12-19 12:49:49 UTC

Space Shuttle Endeavor makes a detailed, global map of Earth.

Sometime between 13 and 20 billion years ago

taileak9_ — 2023-12-19 12:53:43 UTC

The Big Bang probably occurred.