A major new study led by NASA has revealed something alarming: Earth’s cloud cover is shrinking, and this is making the ...

The European Space Agency's orbiting Mars Express spacecraft found clouds that are between 50 and 62 miles above the red planet. The highest clouds on Earth top out at about 52 miles.

This week, meet some supersocial and smart puppies, explore the wild waters of Antarctica’s Southern Ocean, learn about “wandering meatloaf,” discover colorful clouds on Mars, and more.

Clouds cover about 70% of the planet at any moment. But what if — poof — they all disappeared? Long story short, we'd have huge problems on our hands.

At any given time, about two-thirds of Earth's surface is covered by clouds. Overall, they make the planet much cooler than it would be without them.

The highest clouds on Earth top out at about 52 miles (84 kilometers). You may like 12-mile-tall volcano on Mars punches through clouds | Space photo of the day for June 9, 2025; ...

No matter what shape or size they are, clouds are essential to life on Earth. During the day they help protect us from the sun’s intense heat. At night they act as a blanket to keep us from ...

The researchers ran each model through to 2100 with the same emissions scenario and observed how the impact of clouds on Earth’s energy budget changed results by the end of the century.