On this day, 53 years ago, on February 28, 1972 (January 14, 1972, the United States launched the Jupiter exploration spacecraft "Pioneer 10". On February 28, 1972, the United States launched the spacecraft Pioneer 10. The spacecraft is equipped with sophisticated instruments and cameras to take photos on Jupiter and transmit them back to Earth. After a 21-month space flight, Pioneer 10 approached Jupiter in December 1973. The spacecraft sent thousands of photos of Jupiter back to Earth.