Some asteroids are quietly speeding up or veering off their predicted paths, yet telescopes see no glowing tails or hazy ...

The curious minds at What If analyze what happens if Jupiter swallowed every planet, exploring gravitational disruption, orbital instability, and planetary loss.

Scientists confirm that clocks on Mars run faster than on Earth and will change global space navigation in the future ...

NASA's top planetary defense expert reveals the biggest threat isn't Hollywood-style doomsday rocks, but undiscovered 'city-killer' asteroids. While large and small threats are known, an estimated 25, ...