Category: moving

Sirius is the brightest star in the night sky. UPDATE: This article was published in January 2022—if you’re reading this in August/September 2022 then here’s what you need to know about the very bright “star” in the east after dark. What...

The vitreous gel that is in front of the retina can move around, sometimes pulling on the retina itself. As a result , the retina sends light signals to the brain, causing sparkles, stars, or flashes of light to appear in...