When playing golf in outer space, it's important to keep in mind Newton's Universal Law of Gravitation:
This equation describes the force of gravity between any two masses separated by a distance r between their centers. G is a constant of nature that we call the universal gravitational constant.
See it in action in this week's online game, Gravitee.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.
Online Content Director: Suzanne LaBarre | Email
Senior Editor: Paul Adams | Email
Associate Editor: Dan Nosowitz | Email
Assistant Editor: Colin Lecher | Email
Assistant Editor: Rose Pastore | Email
Kelsey D. Atherton | Email
Francie Diep | Email
Shaunacy Ferro | Email
Copyright © 2012 Popular Science
A Bonnier Corporation Company. All rights reserved. Reproduction in whole or in part without permission is prohibited.