Aim: Can you remove the star from the ring... and then put it back?!

Difficulty rating 3

Galileo Galilei (1564-1642)

Not only a physicist and philosopher, he was the father of modern astronomy. he constructed a telescope and was the first to see the mountains and valleys on the moon, and the vast number of stars comprising the Milky Way. He discovered sunspots and the phases of the planet Venus, but he was accused of heresy for suggesting that the sun was the centre of the Solar System.