Days would last four hours, winds would blow at hurricane force and there would be a dense and toxic atmosphere resembling that of Venus.
Luckily, 50 million years after the formation of the solar system, our proto-planet was hit by a celestial body more than twice the size of Mars, which formed the moon.
In this one-hour special, viewers will learn what Earth was like before the moon and what Earth would be like if the moon disappeared.