STS launched @ Kennedy Space Station.

Space Shuttle Atlantis' last flight was in 2011. So from 2011, she did 5 missions. Here they are in order from oldest to most recent;

STS-122

STS-125

STS-129

STS-132

STS-135

its a shorter way of sayin it

The Columbia accident.

The shuttle missions are numbered in order of launch date. The next launch will be STS-125, which will service Hubble. Sometimes they launch out of sequence because of delays. STS-119 will launch in between STS-126 and STS-127. Assuming the first launch was STS-1, there would seem to have been 123 shuttle missions.