It would take over an hour for a heavy object to sink 6.7 miles down to the deepest part of the ocean.

Quasars emit more energy than 100 giant galaxies.

The speed of light is generally rounded down to 186,000 miles per second. In exact terms it is 299,792,458 m/s (metres per second – that is equal to 186,287.49 miles per second).

Somewhere in the flicker of a badly tuned TV set is the background radiation from the Big Bang.