I'M SORRY ... BREAKING THE DISK.ON ITS LIGHTED SIDE, MERCURY'S TEM...

17. I'm sorry ... breaking the disk.

On its lighted side, Mercury's temperature is about 300 degrees centigrate. But the dark side is

A. about B. for C. in D. of

extremely cold, but 150 degrees below zero so mercury is probably the coldest as well as the