A Google Doodle today celebrates Nicolaus Copernicus, the Renaissance astronomer who pushed forward the (at the time) radical idea that Earth wasn't the center of the universe. Instead, he theorized ...

Ancient Greek astronomer Aristarchus was the first who presented the heliocentric system, maintaining that the Earth revolves around the Sun.

Nicolaus Copernicus: An Essay on his Life and Work. By Fred Hoyle — Nearly everyone is ready to honour Copernicus, yet very few can explain exactly what he achieved. “His heliocentric picture of the ...

The Leiden Sphaera — the dynamic model of the solar system pictured above — was built around 1670 by Dutch clockmaker Steven Tracy. The impressive cosmic model measures 1.5 meters across, and is ...

The heliocentric theory is the idea that the Sun is at the centre of the solar system and that everything else – planets, asteroids, comets and the rest – revolves around it. Prior to heliocentrism, ...

A new analysis of our solar system’s interstellar interloper, 3I/ATLAS, reveals that it’s spewing huge amounts of water — and ...

The Copernican Principle, named in honor of Nicolaus Copernicus (who proposed the heliocentric model of the universe), states that Earth and humans do not occupy a special or privileged place in the ...