Expert: Michael Nelson - 7/29/2007

Question
1. how has the spitzer telescope helped in our understanding of the universe ?
2. what the advantages of a telescope that uses infrared radiation over an optical telescope?
3. what is the purpose of the international space station?
4. what types of research has been carried out on the internation space station ?

Answer
Hey Catherine,

The Spitzer telescope was launched into outer space in 2003.  It picks up infrared radiation (like you said).  The reason it is sent into outer space is because most of the infrared radiation is blocked by our atmosphere.  Now (1) and (2) tie in together.  Many fields of space are covered with huge dense clouds of gas used to make stars.  These gas clouds block visual light but, infrared can pass through them.  So, we can see much more of space.  


The international space station is used for a variety of things.  Major fields include physics, astronomy, biology, and meteorology.  As of right now, there hasn't really been much experimentation.  However, we did study long term effects of micro-gravity on humans.  More research will being to come though.  Especially in the biology area.  

Thanks for the questions and I hope I was able to answer them.  

-Michael