1 The
speed of light is generally rounded down to 186,000 miles per second. In exact terms it is 299,792,458 m/s (equal to 186,287.49 miles per second).
2 It takes 8 minutes 17 seconds for light to travel from
the Sun’s surface to the Earth.
3 10 per cent of all human beings ever born are alive at
this very moment.
4 The Earth spins at 1,000 mph but it travels through
space at an incredible 67,000 mph.
5 Every year, over one million earthquakes shake the
Earth.