
Physics
Explainer: The fundamental forces
Four fundamental forces control all interactions between matter, from the smallest subatomic particles to the largest structures in the universe.
By Trisha Muro
Four fundamental forces control all interactions between matter, from the smallest subatomic particles to the largest structures in the universe.
Researchers have developed a camera the size of a coarse grain of salt that takes amazingly clear photos.
Mass shows how much an object resists speeding up or slowing down when force is applied — a measure of how much matter is in it.
On TV, people in space walk around like they’re on Earth. How can science give real astronauts artificial gravity? Spin right round, baby.
A toy called a light mill inspired researchers to invent a new way to fly. They’re using light to levitate small nanotube-coated discs.
The Parker probe’s first data is giving scientists a look at what’s to come as the craft moves closer to the sun over the next few years.
Meteors regularly enter Earth’s atmosphere. Most ‘shooting stars’ pose few risks to life on the ground, but the rare big ones can be lethal.
A classic physics problem asks what would happen if you plunged through Earth’s center. A new study contends you could never make it to the other side.
The Juno spacecraft will peer into Jupiter’s clouds and fly in close to its monstrous auroras.
A Swedish teen’s analyses of a sample of amber may have uncovered a previously unknown type of ancient tree.