Bow-wowing them with radar

At the end of a lecture that he gave at the Asteroids 2001 meeting in Santa Flavia, Italy, last month, astronomer Steve Ostro reached into his backpack and threw a bunch of dog bones into the audience. The crowd couldn’t get enough.

216 Kleopatra: A 7-centimeter-long plastic replica. Design Cast Studios

The highest-resolution radar image of an asteroid reveals that 1999 KW4 consists of two orbiting bodies.