A Tiny Sun in a Jar Is Shedding Light on Solar Flares
This new lab experiment explores the physics involved in our star’s tumultuous interior regions—by creating a sphere of plasma. ..
This new lab experiment explores the physics involved in our star’s tumultuous interior regions—by creating a sphere of plasma. ..
Two physicists find that our universe has a higher entropy—and is therefore more likely—than alternative possible universes. ..
In this cartoon world built to teach concepts from Randall Munroe’s book What If? 2, you can fly a rocket around randomly—or explore the physics of an alternate ..
The past and future are tightly linked in conventional quantum mechanics. A tweak could let quantum possibilities increase as space expands. ..
A growing catalog of huge but dim “ultra-diffuse” galaxies is forcing astronomers to invent new theories of galactic evolution. ..
To send astronauts on long-term space missions, it’ll take rotating habitats to produce artificial gravity. But that’s trickier than you might think. ..
NASA will soon release the results of its DART mission to find out whether crashing a probe into a space rock can deflect it. Here’s how they'll do the math. ..
In What If? 2, Randall Munroe explains that evading gravity can reduce your mass—but let’s do the math to see how far you have to go. ..
If you want to attain high speeds without getting airborne, it helps to know a little something about friction. ..
It’s impossible to reduce gravity, but you can find some clever ways around it. ..