Massive asteroid to pass closer to Earth than the moon this weekend.

Asteroid 2023 DZ2, measuring between 140 and 310 feet in diameter, is expected to fly between Earth and the moon at speeds exceeding 17,400 miles per hour on March 25. Although it is not expected to collide with Earth, its close approach will allow astronomers to learn more about asteroids, helping them prepare for any "potential asteroid threat" that could be discovered in the future. The asteroid will be observable through small telescopes, and astronomers are using this close approach to learn as much as possible about it in a short time period.