Asteroids: NASA Tracking House-Sized Space Rock Near Earth [Video]

NASA has been tracking a house-sized asteroid in the vicinity of Earth that is hurtling through space at a zippy 42,300 miles per hour.

Known as “2025 HM4,” the asteroid’s path brought it within a cosmically-small 477,000 miles of our home, according to NASA‘s Jet Propulsion Laboratory (JPL).

The space rock is estimated to be around 49 to 111 feet in diameter, according to the JPL’s Center for Near-Earth Object Studies (CNEOS).

Asteroids are small, rocky masses left over from the formation of the solar system around 4.6 billion years ago. They’re found in the main asteroid belt, orbiting around the sun between the paths of Mars and Jupiter.

2025 HM4 isn’t the only space rock approaching the Earth this week. NASA is also tracking two airplane-sized asteroids—the “2024 BF” and “2025 …