An asteroid, large enough to wipe out an entire city, passed between Earth and the Moon on March 25. The European Space Agency (ESA) announced that it will use the once-in-a-decade event as a training exercise for planetary defense.
The asteroid, which according to the ESA measures between 130 and 230 feet, was named 2023 DZ2. It posed no threat and zoomed at a safe distance from Earth.
