University of Hawaii

141: Eyes on the back of your head with Dr. Tholen

Dr. Dave Tholen  talks about near-Earth asteroids. He explains why they can be difficult to observe, and how he manages to spot them anyway. He also tells the story of a particularly famous asteroid that he discovered, and sets the record straight about its name.  Hear the performance of "Pirates of the Caribbean"  here .  Image:  Graphic  showing the path of asteorid 99942 Apophis changing after a close pass with Earth.

Dr. Dave Tholen talks about near-Earth asteroids. He explains why they can be difficult to observe, and how he manages to spot them anyway. He also tells the story of a particularly famous asteroid that he discovered, and sets the record straight about its name.

Hear the performance of "Pirates of the Caribbean" here.

Image: Graphic showing the path of asteorid 99942 Apophis changing after a close pass with Earth.

Episode 30: Space weathering with Dr. Kaluna

Dr. Heather Kaluna  talks about space weathering, which changes the surfaces of the moon, asteroids, and Mercury. She studies space weathering in a laboratory, where she can reproduce hundreds of millions of years of weathering in just forty minutes. This image shows Harrison Schmitt, Apollo 17 astronaut and the only geologist to have been to the moon (NASA).

Dr. Heather Kaluna talks about space weathering, which changes the surfaces of the moon, asteroids, and Mercury. She studies space weathering in a laboratory, where she can reproduce hundreds of millions of years of weathering in just forty minutes. This image shows Harrison Schmitt, Apollo 17 astronaut and the only geologist to have been to the moon (NASA).