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.
EUROPEAN SCIENCE: A Second Entry in the Mars Sweepstakes
Mason Inman
LONDON--More than 100 European scientists met last week in Birmingham, U.K., to define Aurora, a solar system exploration venture that faces a critical decision this year.