Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.
NASA's $3 billion space science program needs more input from the scientific community, a more powerful voice within NASA. So says a committee of the National Academy of Sciences. NASA says it's already doing what the committee recommends.