All products featured on WIRED are independently selected by our editors. However, we may receive compensation from retailers and/or from purchases of products through these links. Newton’s third law ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Watch two astronauts curl themselves up like balls in microgravity to demonstrate Newton's third ...

Newton’s third law tells us that for every action, there’s an equal reaction going the opposite way. It’s been reassuring us for 400 years, explaining why we don’t fall through the floor (the floor ...