How do galaxies affect our understanding of the universe?
The Galaxy sometimes changes our view of what we thought or concluded before only by guessing....
Here I'm mentioning in points about the changes.
- THE PTOLEMY'S UNIVERSE- ** In this he concluded the solar system to be earth centered means he said that Earth is at the center of our solar system and all the planets revolve around it.Later it was concluded that all the planets revolve around the Sun and the Earth is just a small planet in it.
. THE COPERNICAN MODEL**** -It was developed by Nicolaus Copernicus and it stated that the sun is at the center of the universe. It was motionless and all the other planets like earth,mars,etc revolve around it in a circular path. But later they came to know that our universe is a very big one and the sun is situated in a galaxy known as MILKY WAY and all the planets revolved around the sun in an elliptical path.
. THE ELECTROMAGNETIC SPECTRUM - Its the full form of [EM].It is the range the range of all types of EM radiation. Nowadays many model telescopes are able to view or show the different wavelengths of electromagnetic energy and helps in generating pictures from the space that is invisible to the unaided eye.