Credit: NASA

The Planetary Society reports that in the early morning of December 15 Steven Ostro passed away, he was 62.

"Steven J. Ostro was an American scientist specializing in radar astronomy. He worked at NASA's Jet Propulsion Laboratory. Ostro led radar observations of numerous asteroids, as well as the moons of Jupiter and Saturn, Saturn's rings, and Mars and its satellites. As of May 2008, Ostro and his collaborators had detected 222 near-Earth asteroids (including 130 potentially hazardous objects and 24 binaries) and 118 main belt objects with radar[1]"

Excerpt: Wikipedia.org