Spacecraft Images Comet Target's Jets
Jet Propulsion Laboratory https://www.jpl.nasa.gov/ Nov. 4, 2010
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The Deep Impact spacecraft's High- and Medium-Resolution Imagers (HRI and MRI) have captured multiple jets emanating from comet Hartley 2 turning on and off while the spacecraft is 8 million kilometers (5 million miles) away from the comet. The movies from HRI and MRI show the progression of two jets during a 16-hour time period.