Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works ...

Explore the physics behind traveling from the Earth to the Moon and discover where gravity effectively becomes zero. Learn how gravitational forces balance, why astronauts feel weightless, and how ...

Of the four fundamental forces of physics, gravity is the one we’re most familiar with in everyday life, but it’s also the only one that can’t currently be explained by quantum physics. Now scientists ...

If you want to understand gravity, it makes sense to study black holes. Nowhere else can you find so much gravity so conveniently compacted into such a relatively small space. In a way, in fact, black ...

This new propulsion system could rewrite the rules of spaceflight—not to mention completely defy conventional physics.

The best way to find buried treasure may be with a quantum gravity sensor. In these devices, free-falling atoms reveal subtle variations in Earth’s gravitational pull at different places. Those ...

The flow of time isn’t as consistent as we might think – gravity slows it down, so clocks on the surface of Earth tick slower than those in space. Now researchers have measured time passing at ...

There is likely little in the world of physics that is so accurately named yet exotically connotated as matter and antimatter. Matter is simple; it is all the stuff and material that makes up you and ...

Despite decades of searching, the "dark matter" thought to hold galaxies together is still nowhere to be found. Matthew Chalmers describes how some physicists think it makes more sense to change our ...

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