More than 400 years ago, Galileo Galilei built a telescope. He was an Italian 13 ______. He used the telescope to study space. Since then, scientists have used telescopes to make 14 ______ discoveries. The Hubble Space Telescope was sent to 15 ______ in 1990. It has sent back more than a million 16 ______. Soon, a new telescope will take over for Hubble. It is the James Webb Space Telescope. It is also called JWST, and Webb. In 2018, a 17 ______ will take JWST into space. The new telescope will explore farther into space than Hubble. It will travel a million miles from Earth. This will give scientists a better 18 ______ of the universe. «Hubble rewrote astronomy textbooks,» Maggie Masetti told TFK. She works on the Webb project. «Webb is going to do the same thing.»