Nocturnal animals tend to have proportionally bigger eyes than ... kinds of light receptor cells—rods and cones. (Both are named after their relative shapes.) Cones work in bright light and ...

Together, they help your eyes focus so you can clearly see objects at different distances. They also adjust how much light enters your pupil so you can see in dim or bright light. The blood ...

Greetings, stargazers. Spring is galaxy season for many amateur astronomers. However, when looking through an eyepiece instead of a camera for astrophotography, you might think of this as the season ...

Medically reviewed by Andrew Greenberg, MD Photophobia is an intolerance or sensitivity to light. It is linked to various eye ...

This is because our cone cells function best in relatively bright light. Other cells in our eyes, called rod cells, help us see in dim light. But because rod cells only have a single light-sensitive ...

Forbes reported that the star system, T Corona Borealis, exploded in 1787, 1866, and 1946, making it a predictable event witnessed by multiple generations of humanity. To spot the star, look for the ...