Today in history: On Jan. 28, 1986, the space shuttle Challenger exploded 73 seconds after liftoff from Cape Canaveral, killing all seven crew members, including schoolteacher Christa McAuliffe. Also on this date: In 1547, England’s King Henry VIII died at age 55; he was succeeded by his 9-year-old son, Edward VI. In 1813, the novel “Pride and Prejudice” by Jane Austen was first published, anonymously, in London. In 1922, 98 people were killed when the roof of the Knickerbocker Theatre in