You’ve reached this website because you received a personal invitation by email to the launch of the MAVEN mission to Mars. MAVEN is scheduled to launch from Cape Canaveral (Florida) in November. At this web site, you can sign up to receive a formal invitation from NASA. There is no commitment to attend the launch by signing up, so it’s OK to submit the form even if you’re unsure at this point.
Note that there is a hard deadline for submitting names of July 15.
If you have any questions about the sign-up process or any problems with the web site, or if a member of your group is a foreign national, please contact the sender of your email invitation for more information.