https://edition-m.cnn.com/2019/01/0...success/index.html?r=https://edition.cnn.com/
Although the flyby occurred at 12:33 a.m. ET on January 1, the spacecraft is so far from Earth that the "phone-home" signal didn't reach us until about 10:30 a.m. ET. Mission scientists were notably relieved about the success because there was only one chance to get it right as New Horizons screamed past Ultima at 31,500 miles per hour.

