Galileo Spots Jupiter's Moons and Rewrites the Cosmos
On January 7, 1610, Galileo Galilei aimed his homemade telescope at Jupiter and saw strange points of light — the first sighting of the four moons that helped topple the Earth-centered universe.
On January 7, 1610, Galileo Galilei aimed his homemade telescope at Jupiter and saw strange points of light — the first sighting of the four moons that helped topple the Earth-centered universe.