Scientists computationally designed a new, metastable, ultralight form of crystal aluminum, with a density of only 0.61 gram per cubic centimeter, light enough to float on water. The new material could have important applications in space flight.

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Scientists computationally designed a new, metastable, ultralight form of crystal aluminum, with a density of only 0.61 gram per cubic centimeter, light enough to float on water. The new material could have important applications in space flight.