When is the first day of fall? What time is the autumn equinox? When do we change the clocks? Your questions answered.

The current record-holder occurred on July 5, 2024, when the day lasted 1.66 milliseconds shorter than usual, according to ...

What is the speed of Earth's rotation? Here's why we don't feel a thing, even though Earth spins at 1,000 mph.

Earth. The breakthrough boosts the search for life-supporting planets. "Are we alone?" This enduring question has fascinated humanity for generations. The discovery in 1995 of the first exoplanet orbi ...

There are a total of three days this summer — July 9, July 22 and Aug. 5 — when the moon will be around its furthest distance ...

As the Earth spins faster this summer, the days are just slightly shorter. But those milliseconds are adding up.

The moon causes a second phenomenon that affects Earth’s rotation on a human timescale. Beachgoers know full well that the moon’s gravity causes the seas’ daily high and low tides, and the solid Earth ...

NASA and India have paired up to launch an Earth-mapping satellite capable of tracking the slightest changes in land and ice. The satellite blasted off from India on Wednesday.

NASA and India launched the NISAR satellite to track Earth's changes, predict natural disasters and study glaciers, groundwater and carbon emissions ...

NASA and India have paired up to launch an Earth-mapping satellite capable of tracking the slightest changes in land and ice.

Explore the causes of Earth's seasons in this 1979 film. Learn how the Earth's axis tilt and orbit around the sun create seasonal changes, equinoxes, and solstices.