It had been known since ancient times that the world was round. Galileo proved that the universe did not revolve around the earth.
no the set out to find Asia which was the center of the spice trade for his country Europe he knew the world was flat but he did not think he would fall off he thought he would not travel that far at...
Yes, travel. Because the Earth's surface is curved, you'll notice that different constellations of stars are revealed ...
You can look at a picture of it taken from space, or the moon
the melting of polar ice caps is one proof that the world temperature is indeed increasing.