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

Earth isn’t spinning as steadily as we think. Scientists say subtle cosmic and climate forces are slowing it down, hinting at ...

The Moon exerts a constant physical influence on Earth through gravity, light, and orbital interaction. Its mass shapes ocean ...

But in all likelihood, the Earth will not see this time, having been engulfed by the Sun in its red giant phase, around 7.6 ...

Thanks to Einstein’s relativity, time flows differently on Mars than on Earth. NIST scientists have now nailed down the ...

Imagining every drop of Earth’s water hurled into the Sun sounds like a last-ditch cosmic fire extinguisher, but the physics ...

Small lakes on ancient Mars may have remained liquid for decades, even with average air temperatures well below freezing.

China has completed construction of the world’s most powerful hypergravity machine, a device designed to compress space and time to simulate extreme events like dam and earthquake disasters.

Astronomers found a young galaxy cluster with unexpectedly hot gas, suggesting cosmic structures formed faster than once ...

Scientists have discovered a rogue planet roaming the Milky Way after combining observations from Earth and a space telescope ...

"How do you get to Mars when the launch vehicle is not necessarily going to Mars?" ...

Webb telescope discovered a bizarre exoplanet with carbon atmosphere, no hydrogen, orbiting a super-dense spinning star.