Galileo Galilei was the most brilliant astronomer of his time, armed with a telescope and an obsession with truth. In the ...

On Jan. 7, 1610, Galileo Galilei turned his self-built telescope, which he had recently made improvements to, towards Jupiter. There he noticed three spots of light. Though he first concluded they ...

There’s no mistaking Jupiter in the sky these winter evenings, rising in the southeast as evening twilight ends. In fact, you should be able to easily see it long before twilight fades. Jupiter is ...

Scientist celebrated today for changing our view of the universe. Aug. 25, 2009 — -- Who invented the telescope? Not Galileo. Who first pointed it at the heavens? Again, it wasn't Galileo. So ...

Humans like to think by analogy, and this method often works well for advancing knowledge. For instance, when Galileo first turned his new telescope towards the heavens in 1609–10, he quickly noted ...