Answer:
Telescopes have changed the way scientists study the Solar System. Before telescopes, people were only able to observe the Universe with their naked eyes. ... If it were not for telescopes, scientists would not be able to detect possible threats to Earth or predict comet's sightings.
Explanation:
400 years ago, before telescopes, our understanding of the universe was very different.
This is what was believed:
We live on a spherical ball orbited by the rest of a finite, spherical universe.
Earth does not move. It is the center of the universe.
Our Sun orbits the Earth, as do all the other planets and the Moon.
The stars are distant objects, always perfect and unchanging.
How did telescopes & associated technologies unlock the secrets of the universe and
help us toward the understanding we have today where Earth is no longer at the center of
the universe? Instead, we know that ours is a small planet orbiting a star in the suburbs
of a large galaxy filled with billions of other stars and planets, surrounded by billions of
other galaxies becoming increasingly ever distant from each other by the expansion of
space.
This is the story of how telescopes continuously changed our understanding of the
universe and our place in it - transforming our view of our universe. And we still have
much more to discover!
2. Before telescopes, we could only use our eyes and a variety of measuring instruments to
plot the positions and movements of objects in the sky to create a limited understanding
of our universe. We had no way to know what these objects actually were and little
evidence for our relationship to the cosmos.
