An asteroid is on a possible collision course with Earth, although the risk is rather small. According to NASA, the asteroid, known as 2023 DW, is nearly 50 metres in diameter and could arrive on Valentine's Day in 2046.
It has about a one in 600 chance of hitting Earth and has since been placed on the European Space Agency's risk list, a catalogue of all objects floating through space that have the potential to hit Earth.
While a collision with 2023 DW seems unlikely, scientists have been preparing for such an encounter for years. Last October, NASA confirmed the agency's Double Asteroid Redirection Test (Dart) mission had successfully changed the travel path of a small asteroid by slamming a spacecraft into it.
