MIT stories

 
For all our advances in science and technology, the inner workings of the human brain remain largely a mystery when it comes to some of our habits and addictions. But a new research study from MIT has offered new insight into how we might be able to directly control those habits with simple bursts of light.
 
It's one of those nagging problems science has yet to solve: how do we save Earth if one of our asteroid neighbors starts heading our way? We've noodled everything from tractor beam, lasers, and even nuking them Armageddon style. A new proposal joining the chorus suggests hitting asteroids with white paintballs could do the trick — first by steering them off course with the force of impact, then by using the force of reflected sunlight bouncing off the paint to slowly move the offender out of the way.
 
Satellites, like the people who make them, come in all shapes and sizes. Their parts do as well. And while some thrusters are large and impressive, some satellites need smaller ones. So Paulo Lozano at MIT decided to build a rocket thruster the size of a penny.

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