Earth Has Just One Moon, Right? Think Again

Earth Has Just One Moon, Right? Think Again

Earth Has Just One Moon, Right? Think Again
by Joe Palca, Morning Edition, NPR, April 3, 2102'
http://www.npr.org/2012/04/03/149712082/earth-has-just-one-moon-right-think-again

The paper is:

Granvik, M., J. Vaubaillon, and R. Jedicke, 2012,
The population of natural Earth satellites. Icarus.
vol. 218, no. 1, pp. 262–277.
http://www.sciencedirect.com/science/article/pii/S0019103511004684
PDF file of preprint at http://arxiv.org/abs/1112.3781

Other moons of Earth, Wikipedia
http://en.wikipedia.org/wiki/Other_moons_of_Earth

Yours,

Paul H.