What would be an easy, yet interesting topic for an Astronomy presentation?

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graagh

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For my Astronomy class; it has to be 15 mins long, so something with a lot of information would be good.
 
How we cant see the edge of our universe not because or technology but because it is physically impossible. the universe is around 14 billion years old, meaning we can only see 14 billion lightyears away since the way we see things are through light. This would mean that anything 14+ billion lightyears away can't be seen.
 
Pluto. Expose the case of those derelict astronomers that decided to demote Pluto, since they did not have the talent and/or technology to discover new things, they got occupied with morbid degrading ideas.
 
An interesting and highly visual topic would be the Hubble Space Telescope and the fantastic photos we have obtained thru it. You could display some of the photos with a short explanation of the photos importance. It found areas of space that seem to have older dying stars. It also found nebulas with star "nurserys" light years in size where new stars are being born.
You could talk about HST initial focusing problem and correction but I would concentrate on the results.
You want to keep it highly visual as most people are visually oriented and good photos with a good story are memorable.
good photos plus interesting facts equal good grade :)
 
talk about the moon of saturn Titan which they say has liquid and an atmosphere its sort of like earth

http://en.wikipedia.org/wiki/Titan_%28moon%29

Hope this helps
 
well you could use the stars and how they are in shapes, what caused them, what they really are and some other mumbo jumbo
 
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