"...about 20 years from now, with a roughly 1-in-600 chance that the space rock will collide directly with our planet..." by Brandon Specktor via Live Science image credit: Science Photo Library - ANDRZEJ WOJCICKI via Getty Images The newly discovered asteroid 2023 DW could collide with Earth in February 2046, although the odds of an impact are low. A newly discovered asteroid may make a perilously close approach to Earth about 20 years from now, with a roughly 1-in-600 chance that the space rock will collide directly with our planet, officials with NASA's Planetary Defense Coordination Office tweeted. While that's a higher-than-average risk level for near-Earth asteroids, it's still a "very small chance" of impact, NASA wrote — and that risk level is expected to decline as clearer observations of the asteroid become available. First detected on Feb. 27, the asteroid dubbed 2023 DW is estimated to measure about 165 feet (50 meters) in diameter, or roughly the length of an Olympic