Very large red glowing oval or cylinder shape object,, appeared

It was a beautiful dark clear star lit night , when a small red light approach us in back yard of home , it expanded to approximately 30 feet wide and 15 feet high,,, hovering behind a tree at about 70 feet high ,,, it slowly moved to the right into plain view , glowing red , making no sound,, we were stunned, ,it hovered for about 1 minute, and then in blink of an eye shot up at 45 degree angle to about 20,000 feet ,, and green halo formed around it and then it it shot out of site ,,,what was also very strange is when it disappeared out of site the hot tub we were in stopped working, I tried to restart it ,, but it started on its own