Ever since its formation around 4.5 billion years ago, Earth's rotation has been gradually slowing down, and its days have ...

Because oxygen seeps (diffuses) out of mats slowly, the timing of sunlight becomes a big deal. Short days mean the sun sets ...

Recent observations have confirmed that the Earth’s rotation is gradually accelerating, causing days to become fractionally ...

WASHINGTON — Wednesday will be slightly shorter than usual, but you probably won't notice the difference even if you're watching the clock closely. Earth is expected to complete a full rotation on ...