Water ice and organics on the surface of the asteroid 24 Themis

@article{Campins2010WaterIA,
  title={Water ice and organics on the surface of the asteroid 24 Themis},
  author={Humberto Campins and Kelsey D. Hargrove and Noem{\'i} Pinilla-Alonso and Ellen S. Howell and Michael S. P. Kelley and Javier Licandro and Thais Moth{\'e}-Diniz and Yanga R. Fern{\'a}ndez and Julie Elaine Ziffer},
  journal={Nature},
  year={2010},
  volume={464},
  pages={1320-1321}
}
It has been suggested that Earth’s current supply of water was delivered by asteroids, some time after the collision that produced the Moon (which would have vaporized any of the pre-existing water). So far, no measurements of water ice on asteroids have been made, but its presence has been inferred from the comet-like activity of several small asteroids, including two members of the Themis dynamical family. Here we report infrared spectra of the asteroid 24 Themis which show that ice and… 
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Detection of ice and organics on an asteroidal surface
TLDR
The spectroscopic detection of water ice and organic material on the asteroid 24 Themis is reported, a detection that has been independently confirmed and concludes that water ice is more common on asteroids than was previous thought and may be widespread in asteroidal interiors at much smaller heliocentric distances than was previously expected.
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