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Last updated on April 20, 2014 at 7:42 EDT
Hartley 2 Close Up

Hartley 2, Close Up

This image from the High-Resolution Instrument on NASA's EPOXI mission spacecraft shows part of the nucleus of comet Hartley 2. The sun is illuminating the nucleus from the right. A distinct cloud of individual particles...
Word of the Day
thropple
  • The throttle or windpipe.
  • To throttle; strangle.
The origin of this word is obscure. It is too early to be an alteration of 'throttle.'
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Quote of the Day
We have genuflected before the god of science only to find that it has given us the atomic bomb, producing fears and anxieties that science can never mitigate.

- Martin Luther King Jr. (1929 - 1968)
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