Pinky,
You can check out the celestrack website on the page below
"http://celestrak.com/NORAD/elements/master.html". This lists most orbiting objects and will give you a description of the launch date, purpose and orbit of the spacecraft. The purpose of the database is to provide...
mmmm...and of course JPL's mission site is interesting:<br><A HREF="http://www.jpl.nasa.gov/missions/" TARGET="_new">http://www.jpl.nasa.gov/missions/</A><br><br>and while I'm here the Swedish Space Corporation has interesting mission pages (and papers):<br><A...
MrConfusion,<br><br>I'm not sure what you mean by spacecraft designs: it covers a wide range of topics. Look at the pages below, they have links to a large number of mission homepages, you should be able to find out more on the design aspects of spacecraft:<br><br>ESA missions:<br><A...
To add to MikeW comments on standardised spacecraft, I can point you to a database: <A HREF="http://www.eurospace.org. " TARGET="_new">www.eurospace.org. </A>; It contains a list and brief spec. of European (standard) spacecraft platforms. It is a common philosphy...