Once at the tracking station, Greg reached into the tiny hole and packed grease around the failed bearing.

CNN: The 10-year-old who helped Apollo 11, 40 years later

If you were to assume that every point in the universe contained some information, then even a small office would be so densely packed with particles that it would collapse in on itself like a black hole, says Raphael Bousso, a physics professor at the University of California, Berkeley.

FORBES: Flatland?