What color is moonlight typically, and what other colors can moonlight look like from our perspective on Earth?

White particles in your urine can be especially alarming if you’re pregnant. It’s likely due to leukorrhea, normal vaginal discharge that’s usually thin and milky.

Possible causes of white particles in urine include UTIs, kidney stones, STIs, yeast infections, prostatitis, and pregnancy. Learn about the symptoms and more.

Mysterious ribbons of grayish white have been spotted woven through the northern lights. New images reveal that these ghostly glows can appear tucked within or curled up beside red and green auroras.

A cloud of high-energy particles surrounding a distant galaxy cluster offers a rare glimpse into the forces shaping the early universe.

A faint radio glow reveals a million-light-year halo enveloping one of the earliest galaxy clusters, hinting that energetic ...