Weather officials say different types of clouds can tell you what kind of weather to expect. Here's a look at the different ...

Then they notice a cloud formation that looks like a dolphin ... which look like a pattern of ocean waves in the sky. Kelvin-Helmholtz clouds, also known as fluctus clouds, is a rare phenomenon ...

A video capturing a stunning cloud formation that looks like "the stairway ... dark rectangular beam stretching across an orange-pink sky. A note overlaid on the video says, "Never in my life ...

The best time to see noctilucent clouds is on clear nights between late May and mid-August, about 90 to 120 minutes after ...

Scientists have unlocked one of the solar system's many secrets from an unexpected source: a planetarium show.

Cloud formations are a key indicator of atmospheric conditions, and flat clouds with fluffy tops are especially telling.

Astronomers have discovered a massive hydrogen cloud, known as Eos, shining brightly in ultraviolet light near our solar ...

Mars doesn't have the big puffy, fluffy clouds that look like sheep and dragons on Earth, but its cloud formations have a ... planet looked up at an alien sky and, barely a day later, us humans ...

The ammonia from Adélie penguin guano reacts with sulfur-containing gases in the atmosphere to aid in forming clouds, which ...