The fall equinox marks the first day of autumn. When does fall officially begin in 2025? This visual guide will help get you ...

The sun is in its most active phase—solar summer—causing auroras and posing real risks to satellites, GPS, and power systems ...

The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere and the spring in the ...

FALL IN FLORIDA  The leaves may not change colors, but temperatures will drop gradually during fall in Florida.

But that single day of 91 on Tuesday pushed the number of 90+ degree days to eight for the year, matching the average ...

Tired of the hot weather? Soon, Earth's orbit will lend a hand by tilting the Northern Hemisphere away from the Sun, bringing ...

The equinox marks the arrival of fall in the Northern Hemisphere on Sept. 22. Are you ready for fall? The official arrival of fall is the autumnal equinox, which occurs in the Northern Hemisphere on ...

The Hayabusa2 mission is facing a new challenge after observations showed the asteroid it is going to rendezvous with and ...

Long ago, the Moon was much nearer Earth. Scientists believe a protoplanet collision created the Moon 4.5 billion years ago.

Imagine a massive celestial body colliding with Uranus at high speed; this impact could have 'overturned' Uranus, causing its ...

Click through the following gallery and find out the spin on living in a world that never turned again.

Earth’s radiation can send some molecules spinning or vibrating, which is what makes them greenhouse gases. This infographic ...