writes " The BBC reports that NASA has lost contact with the Mars Climate Orbiter.
If it doesn't get back in touch, it's not just the immediate science stuff lost - it was supposed to stay in orbit as a communications relay for future missions too.
Communication has been lost for almost 3 hours now, it appears - so there's still hope. Update: 09/23 01:36
:It now appears
that a steering problem may have caused it to crash into the planet.