How Well Do Experimental Results on Large Samples of Gas-Laden Amorphous Ice Duplicate Deep Impact's Findings?

The findings of Deep Impact on the structure and composition of Tempel-1 are compared with our experimental results on large (20 cm diameter and up to 10 cm high) samples of gas-laden amorphous ice which does not contain dust. The mechanical ∼tensile strength inferred for Tempel-1: up to 12 kPa is close to our experimental findings of 2–4 kPa. This means that Tempel-1 is as fluffy as our very fluffy, talcum like, ice sample. The thermal inertia: 30

Keywords:

• Amorphous ice
• Mineralogy
• Materials science
• Geology

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