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>> ONE OF THE THINGS

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THEY'RE GONNA HAVE TO DO

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FOR SPACE EXPLORATION IS

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DO ADDITIVE MANUFACTURING,

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BECAUSE WE MAY HAVE AN ENGINE

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PART THAT FAILS, AND

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YOU'RE CERTAINLY NOT GONNA

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TAKE UP SPARE ENGINE PARTS.

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YOU'RE GONNA HAVE TO

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MANUFACTURE THEM THERE.

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AND A LOT OF WHAT WE WANNA DO

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WITH THAT MEANS LOOKING AT

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MICROSCOPIC PARTICLES, BECAUSE

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THEY'RE BUILDING BLOCKS.

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AND NOW I THINK A BIG PART OF

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THE FUTURE IN THIS FIELD,

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AND FOR LOTS OF DIFFERENT

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REASONS, IS ACTIVE MATERIALS.

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SO NOW WE HAVE WAYS THAT

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INSTEAD OF JUST THE PARTICLES

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BEING JUST PARTICLES,

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WE CAN ACTIVATE THEM,

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WE CAN FUNCTIONALIZE THEM,

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WE CAN GET THEM TO ASSOCIATE

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WITH ONE ANOTHER SPECIFICALLY.

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SO ONE OF THE THINGS

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WE'RE AIMING FOR IS ACTIVE

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SELF-REPLICATION, EVOLUTION

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IN MICROGRAVITY,

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TO PUT LOTS OF THINGS TOGETHER

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AND TO OPTIMIZE PROPERTIES

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USING EVOLUTIONARY PROCESSES

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FROM NOT LIVING THINGS, BUT

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MIMICKING WHAT LIVING THINGS

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HAVE DONE SO SUCCESSFULLY.

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WE'LL LEARN HOW TO DO THAT

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ON EARTH EVENTUALLY, BUT

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BEFORE WE DO THAT, IT'S MUCH

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BETTER, BECAUSE THEY HAVE

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DIFFERENT DENSITIES, TO DO IT

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IN MICROGRAVITY.

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[ MUSIC ]

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IT'S ALWAYS REALLY IMPORTANT

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TO DO SOMETHING AT

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THE FOREFRONT OF SCIENCE THAT

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WILL THEN BECOME A FOREFRONT