Today, 30 years ago, on December 10, 1995 (October 19, 1995) the Galileo spacecraft returned Jupiter¡¯s data. On December 10, 1995, the Galileo spacecraft began sending back the first hand data directly from the Jupiter¡¯s atmosphere to the ground on the 10th. The data, the first ever human spacecraft actually entered the solar system¡¯s atmosphere on the ground, was unusual. Starting on December 10, the similar data transmission work will continue for four days. The latest data arrived at four o¡¯clock local time at fifteen o¡¯clock local time. The U.S. Aerospace Administration scientists were very excited about this. It took 52 minutes for the human spacecraft to actually reach the ground with the speed-transmitted radio waves, and the preliminary analysis took eight days to ask