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News and Views
Nature 437, 958-959 (13 October 2005) | doi:10.1038/437958a; Published online 12 October 2005
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Assistant Professor in the Study of Physical Hazards
- University of Cincinnati
- Cincinnati, Ohio, USA
John Innes Centre Project Leader in Plant or Microbial Sciences
- University of East Anglia
- Norwich, NR4 7TJ, UK
Planetary science: The impact of Deep Impact
Paul D. Feldman1
Abstract
A good look at the Deep Impact cometary encounter was taken by the Rosetta mission, itself on the way to a rendezvous with a comet in 2014. So what is a comet — icy dustball or dusty iceball?
NASA's Deep Impact mission aimed to bring a spacecraft weighing 362 kilograms into collision with the periodic comet 9P/Tempel 1 on 4 July 2005. The mission was, by all accounts, a smashing success: the images returned by both the impactor, which showed the first detailed views of a cometary nucleus from just before collision, and the mother-ship, showing the impact and its immediate after-effects (Fig. 1
- Paul D. Feldman is in the Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA.
Email: pdf@pha.jhu.edu
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