Identification of nanophase iron in an H-chondrite impact melt.

Accepted versio

Reflected Light from Sand Grains in the Terrestrial Zone of a Protoplanetary Disk

We show that grains have grown to ~mm size (sand sized) or larger in the terrestrial zone (within ~3 AU) of the protoplanetary disk surrounding the 3 Myr old binary star KH 15D. We also argue that the reflected light in the system reaches us by back scattering off the far side of the same ring whose near side causes the obscuration.Comment: 22 pages, 5 figures. To be published in Nature, March 13, 2008. Contains a Supplemen

Iron meteorites as remnants of planetesimals formed in the terrestrial planet region

Nature, 439, pp. 821-824, http://dx.doi.org./10.1038/nature04536International audienc

Contamination of the asteroid belt by primordial trans-Neptunian objects

Nature, 460, pp. 364-366 (2009)International audienc

Earth encounters as the origin of fresh surfaces on near-Earth asteroids

Nature, 463, Issue 7279, pp. 331-334 (2010)International audienc