CNN Editorial Research(CNN) — Here’s a look at NASA’s Space Shuttle Program which ended in 2011 after 135 missions. The space shuttle program sent more than 3 million pounds of cargo into space. TimelineJanuary 5, 1972 – President Richard Nixon announces the intent to develop the first space shuttle for travel into space. November 7, 2007 – Discovery lands at Kennedy Space Center, with Melroy becoming the second woman to land a space shuttle. On July 21, 2011, Atlantis lands at Kennedy Space Center, marking the sunset of the space shuttle program.