Galileo's Spyglass

During the 17th century, Galileo spent each night considering gravity, the universe and distant stars. The universe opened before him. With the spyglass, he was the first to see that the moon had mountains and deep valleys, that the sun had unexpected spots, rings enwrapped Saturn, and four moons danced around Jupiter. He courageously affirmed that the sun, and not the Earth, was at the centre of the universe. With this revelation, the vast cosmic ocean holding our tiny, fragile world came to be something for every age to investigate and marvel at with its own refined instruments and extended eyes.