It’s been half a century since humankind first landed on the moon. When astronaut Neil Armstrong took the first step in 1969, over half a billion people were watching at home for the climax of a Space Race between nations. Twelve people walked on the lunar surface as part of the Apollo missions, and today a new race to return to the moon is underway.

The flight brings the U.S. one big step closer to putting astronauts back on the lunar surface for the first time since the end of the Apollo program 50 years ago.

E.T., phone Earth ... if you can.

After next week, the awe-inspiring phenomenon will not occur again for about three years.

With this century’s longest blood moon on its way we tell you everything you need to know about this incredible spectacle.

According to astronomers, it's not as apocalyptic as it sounds.