10 Interesting Facts about Callisto
Astronomy Lists

10 Interesting Facts about Callisto

July 5, 2017 Peter Christoforou 0

Callisto is Jupiters’ second-biggest moon, and the third-biggest moon in the solar system, after another one of Jupiter’s moons, Ganymede, and then Titan, the largest moon of the planet Saturn. As with Jupiter’s main moons […]

Helios the sun god
Astronomy History

Who Discovered the Sun is a Star?

March 9, 2017 Peter Christoforou 0

Introduction In ancient Greece during the 7th century BC, scientists like Thales of Miletus (624-546 BC) started to realize that the Sun was not the deity Helios (Apollo) driving his chariot around the Earth, but […]

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