2. He discovered that Jupiter has at least four
moons. The moons orbiting Jupiter proved that
everything in space didn't revolve around the
earth.
This contradicted church doctrine at that time.
3. He noticed that the planets Mercury and Venus
pass through phases just like the Moon. The
only way they could do that is if they circled
the Sun, and not the Earth.
4. In addition to these discoveries, Galileo also
discovered that everything falls at the same
speed. If you jumped off a bridge at the same
time as an elephant you would both hit the
water at the exact same time. Galileo did not
throw an elephant off a bridge, instead, he
dropped two round balls off the Leaning
Tower of Pisa. One was very heavy, and one
was light. Both hit the ground at the same
time.
5. If we didn’t have these discoveries about space
and gravity and telescopes then a lot of people
wouldn’t know about gravity. With the gravity
discovery everyone knows why they fall but
without it they would be confused why they fall.
The telescope discovery has made it possible for us
to see stuff in space that we couldn’t before.
Without the space discoveries then we wouldn’t
know what the center of space is. We would have
thought that Earth was but it’s the sun.
6. Anon, Anon A. "Astronomy Timeline." Windows to the Universe. Anon, 22 June 2010. Web. 02 May
2012. <http://www.windows2universe.org/the_universe/uts/timeline.html>.
Schwarzberg, Amanda. "Galileo's Discoveries and How They Have Influenced Our Lives."Helium.
Helium,
20 Nov. 2007. Web. 02 May 2012. <http://www.helium.com/items/708440-galileos-discoveries-and-
how-they-have-influenced-our-lives>.
Anon, Anon A. "Astronomy and Space for Kids." Astronomy For Kids. Anon, 8 June 2002. Web. 02
May
2012. http://www.kidsastronomy.com/academy/lesson110_assignment2_4.htm
Anon, Anon A. "Was Earth a Migratory Planet?" Discovery News. Anon, 9 Nov. 2009. Web. 02 May
2012.
<http://news.discovery.com/space/was-earth-a-migratory-planet-120418.html>.
