When light passes through materials, it typically changes direction and bends in predictable ways. This change in direction, known as refraction, is caused by a change in the speed of light as it ...

Fata Morgana is an optical illusion caused by a temperature inversion. One viewer caught this rare phenomenon along the North ...

Weather conditions were exactly correct Tuesday to create some beautiful displays of light in the bright sky.

Discover 22 stunning heart-shaped lakes around the world, from alpine wonders to desert oases. Learn how they form and how to ...

These researchers captured photos that wouldn’t look out of place in an art gallery and used them to confirm new species of comb jellies never recorded in Colombia before.

Doctors warn that rising screen time and reduced outdoor play are driving myopia and eye strain in children. Experts explain ...