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-size swimming pool. The asteroid is expected to make a very close approach to Earth on Feb. 14, 2046; as of March 8, the European Space Agency's Near-Earth Object Coordination Centre(opens in new tab) predicts a 1-in-625 chance of a direct impact, although those odds are being recalculated daily. "Often when new objects are first discovered, it takes several weeks of data to reduce the uncertainties and adequately predict their orbits years into...