END OF MISSION

The Cassini space probe ended its nearly 20-year mission Friday when it ran out of fuel and crashed into Saturn's atmosphere. The spacecraft had traveled more than 4.9 billion miles and was the first craft to orbit Saturn.

The last image taken from Cassini was at 12:58 p.m., Sept. 14. The beginnings of the Cassini–Huygens space probe go back to 1982, when the European Science Foundation and the American National Academy of Sciences formed a working group to investigate...