Hi,

This is Jeya. I am a software engineer working in bangalore. I have a great passion for astronomy,aerospace... My ambition is to pursue masters degree in some reputed college in US. Can u suggest me some??

This kind of thing is best done for yourself, look at prospectuses and decide what's important to you in a university.
Look at league tables for evidence of academic performance.
Contact the universities.

Also, "reputed" is surely not the word you wanted to use, I think you wanted to say "a college with repute".
Best of luck :)