1 A curved piece of glass is called a lens.
2 People began to make eyeglasses in the 13th century.
3 They made things look bigger.
4 It was Hans Zippershey.
5 They were 30 times bigger.
6 He studies the dark skies, the Moon, the Sun and planets going around Jupiter.
7 He discovered Jupiter's satellites.
1 A curved piece of glass is called a lens.
2 People began to make eyeglasses in the 13th century.
3 They made things look bigger.
4 It was Hans Zippershey.
5 They were 30 times bigger.
6 He studies the dark skies, the Moon, the Sun and planets going around Jupiter.
7 He discovered Jupiter's satellites.