Deep Impact mission Trivia Questions

It was the first deliberate impact into a comet nucleus, though later missions like Rosetta's Philae lander also touched a comet's surface.

Observations later suggested the crater was about 150 meters wide—larger than a stadium, but initially estimated smaller; the statement exaggerates size for effect.

The impact only created a crater and ejected material; it did not measurably change the comet's orbit. Diverting it would require far more energy.

The impactor had no active guidance; it relied on pre-programmed targeting and was released 24 hours before impact to fly ballistically.

After Tempel 1, the flyby craft was repurposed for the EPOXI mission, which flew by comet Hartley 2 in 2010.

Deep Impact used solar panels for power and a passive thermal design; it had no radioisotope thermoelectric generator (RTG).

The High-Resolution Instrument was derived from Stardust's camera, saving costs and time while providing proven imaging capabilities.

NASA used copper to minimize contamination of the comet's ice and dust, ensuring that any impact debris could still be analyzed for pristine science.