QUOTE (BruceMoomaw @ May 1 2005, 07:19 PM)
Even if there isn't anything left for it to talk to, it's an excellent idea to launch MTO to Mars in the window 2 years BEFORE MSL. MSL is extremely dependent on MTO to return most of its science data -- the rover won't even have any direct-to-Earth radio link! So if the first MTO fails and MSL is launched simultaneously, it will Up That Creek. On the other hand, we could build the second MTO as an emergency backup and launch it in 2011 (along with MSL) if MTO-1 fails after its 2009 launch. (Otherwise we could just leave MTO-2 in storage until we do need it -- which, if things go as planned, won't be until 2018.)
From what I hear, Phoenix will probably be relatively short-lived. It has a 90 day primary mission, and might last more months, but as winter comes, its power levels from solar panels being that far North will become so bad that it will end the mission....that is, unless they can wake it up in the spring, which is unlikely but not impossible.