Most people think a day on Earth is just the time it takes for the planet to make one full rotation on its axis, but that’s ...

The Earth doesn't just spin while on its axis, it wobbles. And scientists at NASA say they've identified three reasons why it happens. A study published in the November issue of the journal Earth ...

An in-depth study conducted by NASA found that humans are responsible for the increasing wobble detected as Earth spins on its axis. When you think of Earth you may think of an exact sphere, but ...

Earth's axis — the invisible line around which it spins — is bookended by the north and south poles. The axis tilts, and thus the pole shift, depending on how weight is distributed across ...

Melting ice is slowing Earth's spin and causing changes to its axis, new studies find. The shifts are causing feedback beneath the surface, impacting the planet's molten core.

Earth spins on its axis at about 1,000 miles per hour, or 1,525 feet per second at the equator. This speed maintains our familiar day-night pattern as a 24-hour cycle.

Over time, tides raised on Earth by gravitational interactions with the Moon and, to a much lesser extent, the Sun, have slowed our planet’s rotation to the 24-hour day we now experience.

But Earth has a massive Moon, which pulls on Earth’s spin axis and drives it to precess faster. This slightly faster precession prevents it from experiencing spin orbit resonances.

Melting ice is slowing Earth's spin and causing changes to its axis, new studies find. The shifts are causing feedback beneath the surface, impacting the planet's molten core.