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1 .This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?
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2 .It's a scenario straight out of Hollywood: You're up in a spacecraft, "you've got this capsule around you," and a loose bolt, a piece of space junk, is zooming your way.
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3 ."And it's going really fast.
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4 .It's going to very likely pass through your spacecraft and leave both entry and exit holes.
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5 .So all of a sudden now your atmosphere is rushing out those holes, and you want them sealed right away."
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6 .That's Timothy Scott, a polymer scientist at the University of Michigan, Ann Arbor.
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7 .He and his team have devised a potential solution to this space disaster: a material that patches itself up, less than a second after impact.
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8 .Think of an ice-cream sandwich.
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9 ."The central part, the ice cream of our sandwich, is a liquid resin."
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10 .The cookie parts are sheets of thermoplastic.
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11 .When a projectile—or piece of space junk, punctures the sandwich, it exposes the liquid part to the ship's oxygen, which causes it to solidify, patching the hole.
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12 .The researchers tested sheets of the self-healing material at a firing range, filming the results with high-speed video.
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13 .And indeed, the material worked fine here on Earth—but they say the findings will have to be replicated under pressure conditions like those you'd find in space.
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14 .The results are in the journal ACS Macro Letters.
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15 .The space station is already well protected by bumpers that vaporize particles on impact.
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16 .But protection doesn't come cheap.
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17 ."It turns out that robust things are also very heavy.
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18 .The intent of this is really to provide a backup that's very low weight."
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19 .It costs some $10,000 a pound to launch equipment into space today.
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20 .So a lighter weight material could save money and lives.
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21 .Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.
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