FILE - In this Jan. 28, 1986 file photo, the space shuttle Challenger explodes shortly after lifting off from Kennedy Space Center. A whole generation _ including McAuliffe's own students _ has grown up since McAuliffe and six other astronauts perished on live TV on Jan. 28, 1986, a quarter century ago on Friday, Jan. 28, 2011. Now the former schoolchildren who loved her are making sure that people who weren't even born then know about McAuliffe and her dream of going into space. (AP Photo/Bruce Weaver, File)