Can You Make a Hollow Metal Sphere So Big That It Floats?
Theoretically, yes. But it’s not terribly practical. And it might mean you’re a supervillain. ..
Theoretically, yes. But it’s not terribly practical. And it might mean you’re a supervillain. ..
To celebrate Pi Day, we look at applications—from NASA to cars—that prove you can have too much of a good thing. ..
NASA plans to deorbit the International Space Station in 2031 by crashing it into the ocean. But is there another way? ..
This is the true story of a hammer, a feather, the Apollo 15 mission, and the answers to humanity’s oldest questions about how stuff falls. ..
You’ve seen them a million times. You might be wearing one right now. But do you know how they work to block a potentially virus-carrying respiratory ..
These structures are a sci-fi solution to the problem of getting objects into orbit without a rocket—but you don’t want to be under one if the cable ..
The famous cartoon schemer has an ingenious plan to lure Bugs Bunny out of his hole—and it involves a giant magnet and an iron carrot. ..
Even ordinary actions, like tossing a tennis ball, can be extraordinarily complex to calculate. The trick is knowing what to leave out. ..
It’s hard enough to predict the outcome of ball collisions in a game of billiards. Do you also have to factor in a player’s effect on the cue ball? ..
We use video analysis to compare an animated liftoff to an actual one, proving that truth is more boring than fiction. ..