Search Kids Discover

An Asteroid’s Twin Moons

  • July 26, 2014
  • By KIDS DISCOVER

Discovered in 1866, Sylvia is one of the largest asteroids in the main belt (those orbiting between Mars and Jupiter). More than 100 years later, it was found to have two moons — making it the first known triple-asteroid system. Romulus was spotted in 2001, and Remus in 2004. (Image credit: Danielle Futselaar / SETI Institute.)

About the author

Kids Discover For over 25 years, we’ve been creating beautifully crafted nonfiction products for kids. With a specialty in science and social studies, our team of talented writers, award-winning designers and illustrators, and subject-experts from leading institutions is committed to a single mission: to get children excited about reading and learning.