Phobos looks like the pupil of a googly eye against the warm glow of the sun. NASA's Perseverance Mars rover was treated to a "googly eye" solar eclipse as the planet's moon Phobos passed in front ...

The Perseverance rover, currently ascending the western wall of Jezero Crater, captured a video of the partial eclipse, which resembled a googly eye, on September 30. The eclipse lasted about 30 ...

A chalazion can develop when a person has a stye that does not go away. Although both blepharitis and conjunctivitis can develop as a result of bacteria, they are different eye conditions.

Some experts will tell you that the human eye can see between 30 and 60 frames per second. Some maintain that the human eye may be able to see much more than that although more research is needed.

By measuring the brain activity of 36 volunteers, scientists found that people can detect basic sentence structures in as little as 125 milliseconds, or about the speed of a blink of an eye.