Here's what you missed on day four at CES

Day four of CES 2016 was less about consumer products, and more about pie-in-the sky ideas. A company that one day plans to mine asteroids 3D-printed an object out of asteroid dust, just to show how humans might build objects on remote planets. We also got our first look at the KATIA robot arm, a surprisingly affordable device that could help you do light manufacturing or, say, build Lego. Finally, we got a look at two smartphones that use Google's vaunted Project Tango tech that will let you 3D scan all the things. For those and the other stories, watch our Editor-in-Chief Michael Gorman's take on the day (above) or check the gallery below.

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A model spacecraft was 3D printed from space dust

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If we ever get to Mars, how are we going to build things? Planetary Resources and 3D Systems tried to answer that question by 3D printing the first ever object using dust from an ancient asteroid. The idea was not to build an exotic trinket (though it's extremely valuable), but rather show the feasibility of using off-world materials for construction.