2.1 

One time I changed my Mind on something important I was in Spanish and then I switched to plant science because I didn't understand it. 

I think scientists change their minds because they find out additional information that they didn't see or recognize before. I think they change their minds in general is the proof there or fact. Example petolymny said that earth was at the center of the universe and he was wrong Copernicus said that the sun was in the center of our solar system.

2.2 

1.  I can see stars, the moon, near galaxy's, northern lights, nebulas. No I don't think it looks like earth is at the center of the universe. 

2.Earth moves faster than mars so when we pass 

Mars It loos like mars is going faster but earth is passing it.

3. It helps us with the view of the universe because it was said that other planets orbited us and it helped us understand with the sun about how we orbited it.  I think this Is correct and it is logical.  Yes it makes perfect sense to me.  At the time there was not another logical answer for the time period.

4. He changed his mind because he reviewed more about the theory he discovered  that earth isnt at the center of the universe but more that the sun is in the middle of the solar system he discovered that earth is 3 in our solar system for rotations around the sun. He supported his claims through scientific proof and evidence, also through facts.  He used logic because he thought it wasn't right by thinking about it, he then used evidence to prove his logic.

Galileo didn't agree with pternomys theory on how the earth was at the center of our universe Nd he knew that earth was a rotating planet. Galileo tested his claim through his invention he telescope proving his theory and expanding off of copernicus's theory.  Not only did he accept it he literally built his claim off of it. He also used intuition, logic and evidence. 

2.3 

It extended my conjectures by explaining an evolution of theory's and building off one another with scientific evidence and facts.  I think he changed his mind from excessive work and studying in the astronomy field. His extensive research  and time and evidence is my evidence. 

Galileo was a good astronomer. I think he changed his mind because Copernicus had evidence present and Ptolemy didn't have enough evidence present. My evidence is that he didn't agree with ptolemnys theory and he  liked copenicus's  theroy.  

2.4

Copernicus rejected Ptolemy because he didn't agree with his theory.  He also did more research than Ptolemy.  It doesn't make sense for the epicycles. Earth Isn't a big enough planet for other planets to orbit.  He was using logic when he supported his claims. Like how. Expand on his ideas

Galileo rejected it because he agreed with Copernicus and his threoy. He Explained the retro grade motion of the planets by gravitational pull. He explained the claims of copernicus by reading them and basing his own idea on them. This is correct and very logical.  He based his claims on evidence.  What evidence. Expand on his ideas

Scientist can Change their minds on various things. In the case of Ptolemy he didn't have enough evidence. Copernicus comes along completely disowns ptolemy and his theory  and brought a completely different look to the table. They completely  forget about the first theory move on to the next until they prove the next wrong then they could go back. 

Copernicus took the idea of the earth being at the center of our universe and tossed it in the trash can. Galileo took Copernicus his idea and made it his own. That was better than the original.  It is good that Copernicus changed his mind. Otherwise we might still thing that earth was at the center of our universe.