The average distance between Earth and the Moon is about 384,000 km. That’s large enough to fit every planet in…
Light is the fastest thing in space, moving at nearly 300,000 km per second. But space itself can expand faster…
Pluto might be small, but it’s not boring. When the New Horizons spacecraft flew by in 2015, it found mountains…
Gravity isn’t uniform across Earth. Because the planet bulges at the equator, you’re slightly farther from the center of mass,…
Jupiter might not have a solid surface, but deep beneath its cloud layers is an ocean unlike anything on Earth.…
Right now, about 100 trillion neutrinos are passing through your body every second. These ghostly particles barely interact with matter,…
Space is a vacuum, but stepping outside a spaceship without a suit wouldn’t kill you instantly. You wouldn’t explode, and…
Light moves at 299,792,458 meters per second in a vacuum, but it slows down in different materials. In water, it’s…