I was wondering if there was enough information on How spectra helps us in Astonomy to write a 2 page paper?

Answer 1

Do some research and you will find there is enough on this topic to write two books.

Answer 2

Absolutely! There is enough information to fill hundreds of books (and they have been filled.)

For example, the 2006 Physics Nobel Prize was awarded for research into blackbody radiation - the idea that you can tell how hot or cold something is by what wavelengths of light it emits. Like an electric stove... the burners are black when they're cold, and red when they're hot.

The way that you can determine the expansion of the universe is by studying all of the wavelengths of light that are emitted from different stars, galaxies, nebula... If you look up red shift, you can get a more thorough explanation.

Also, you can use the EM spectrum to determine the chemical composition of stars, planets. etc.... Also the temperature that stars are "brning" at.

There are tons of applications in astronomy you just have to look in the right places. Look for red shift, blackbody radiation, Big Bang, Star Composition...

Answer 3

You bet there is.

Here's a starting place:

http://casswww.ucsd.edu/public/tutorial/Stars.html