Last weekend, two asteroids made a close approach to our planet and NASA only found out about it after the space rocks safely skimmed past us, Newsweek reports.
Granted, the two asteroids were pretty tiny and didn't pose any danger. Dubbed 2018 NX and 2018 NV, the space rocks only measured between 16 feet (almost 5 meters) and 50 feet (15 meters) across — relatively modest dimensions as far as near-Earth asteroids go.
By comparison, the potentially dangerous asteroid Bennu that's headed for us from 54 million miles (almost 87 million kilometers) away and is expected to reach Earth in 2135 is 1,640 feet wide (500 meters), as reported by the Inquisitr.
At the same time, near-Earth asteroid Ryugu is even larger. Lying 180 million miles (300 million kilometers) from our planet, the asteroid has an estimated diameter of 3,000-foot-wide (900 meters), the Inquisitr recently reported.
Although tiny, our recent visitors have managed to slip very close by Earth — closer than the moon, in fact.
Asteroids 2018 NX and 2018 NV scooted past our planet at a third of the lunar distance, or the distance between us and the moon, coming within 72,000 miles (115,000 kilometers) and 76,000 miles (122,000 kilometers) of Earth, respectively.