Have you ever wonder what’s in the sky when you look up. Maybe another species of some kind is looking up on you. Well I’m going to talk about some of the things you can see and some things you can’t with the naked eye. You can go to www.nasa.gov to get more info on Nicolaus Copernicus, Galileo Galilei, and Edwin Hubble. And in my speech you are going to go for a ride through the early understanding of the Universe. So get your rockets ready because here we go….
Up in the Sky on clear nights you can see upwards to about 100,000 space objects at night. Those range from the Constellations (Orion or your Zodiac Sign), to Planets (Mercury, Venus, Mars, Jupiter, Saturn,), to even Satellites (Hubble, Space Station) orbiting the Earth.
One of the most powerful things ever created are Supernovas. Since they are so far away they can’t be seen with the naked eye. The farthest thing you can see with the naked eye in the Andromeda Galaxy which is on a collision course with our own Galaxy the Milky Way. We have to gives thanks to Nicolaus Copernicus was the first one to come with the design and understanding that the Earth revolved around the Sun, and not everything revolved around the Earth. Galileo Galilei for taking a spy glass lens and instead of spying on incoming ships he pointed up creating the first hand-held telescope. Edwin Hubble expanded our knowledge of the Universe by using the red shift blue shift technique (red moves toward you, blue moves away)
Nicolaus Copernicus
Aristotle idea that was widely accepted at the time was that everything in the night sky revolve around the Earth. This idea came about because to humans on Earth believe the Earth was a none moving body. In 1515 Nicolaus Copernicus proposed that maybe the motion of the stars and planets revolved around the Sun and Earth was a planet just like Venus, Mars, and Jupiter. In that way he could explain why the planets appeared to go one way then backwards and then forward again. That motion was the planet Earth passing other planets in their orbits around the sun. Because he was a priest he did not publish his findings until 1543 shortly before he died for fear of disapproval of the church.
Galileo Galilei
In 1609 Galileo Galilei made the first ever telescope by using a spy glass instead of looking out at ships he looked up. His telescopes could magnify up to 20 times. He saw craters on the moon, discovered Sunspots, Saw the Phases of Venus confirming Copernicus theory that
