Doomsday, it seems, has come and gone countless times.
But one particular prediction for the end of the world has been weighing on the mind of astronomers for more than half a century.
Scientists at Nasa have been watching an asteroid, named 1950 DA, which is currently on a path to collide with Earth on March 16, 2880.
The asteroid is a rock two-thirds of a mile in diameter, travelling at about 15km (nine miles) a second relative to the Earth.
It is due to swing so close to Earth it could slam into the Atlantic Ocean at 38,000 miles per hour.
ANIMATION: Asteroid 1950 DA’s potential trajectory
Over the long timescales of Earth’s history, asteroids this size and larger have periodically hammered the planet.
The so-called K/T impact, for instance, ended the age of the dinosaurs 65 million years ago.