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Listen to the teacher’s lecture and complete the following activities.
Do you know what we can use to see what is in outer space?
a. Humans have always been interested in learning
about the sky. ( )
b. The telescope has always been the same. ( )
c. The first telescope was patented in 1608 and was used to see the sky. ( )
d. Galileo Galilei was the first person to see the moon and its craters. ( )
e. The first telescope was invented in 1694 by Christian Huygens. ( )
f. Isaac Newton invented a smaller, portable telescope. ( )
g. M51 is a star. ( )
h. Giant telescopes were built in the XVIII century. ( )
i. Radio telescopes were invented before giant telescopes. ( )
j. Space telescopes are the most powerful telescopes. ( )