Spotting a tiny moonThe first space rock, asteroid 2011 UL21, passed by Earth on June 27 at a distance of 4.1 million miles (6.6 million kilometers), or 17 times the distance between Earth and the moon. The radar images showed the asteroid is roughly spherical and is one of a pair, called a binary system. NASA/JPL-CaltechThe Asteroid Terrestrial-impact Last Alert System, or ATLAS, at Sutherland Observing Station in South Africa first spotted the space rock on June 16. Astronomers sent radio waves to the space rock and captured a detailed image of asteroid 2024 MK. As the space rock passed by our planet and encountered Earth’s gravity, its orbit changed.

---

Persons: ”, Lance Benner, don’t, ” Benner Organizations: CNN, NASA, Jet Propulsion Laboratory, Space Network, Earth, Catalina Sky Survey, JPL, Caltech, Lucy, Asteroid, Astronomers Locations: Pasadena , California, Tucson , Arizona, Barstow , California, Sutherland, South Africa