Once you understand how certain clouds develop their shapes, you can learn to forecast the weather. Clouds that look like cartoon cotton balls or cauliflower are made up of tiny liquid water droplets ...

How are clouds’ shapes made? – Amanda, age 5, Chile I’m a meteorologist, and I’ve been fascinated by weather since I was 8 years old. I grew up in Minnesota, where the weather changes from ...

"We found that some comets in the inner Oort cloud form a long-lasting spiral structure." Spirals are a repeating theme in ...

The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it ...

But perhaps the oddest of all is the Oort Cloud, a vast field of icy debris extending out to 100,000 times the distance between Earth and the Sun. We have a rough idea of the size and shape of this ...