Astronomers have determined that a distant galaxy discovered three years ago is rotating, making it the most distant rotating disk galaxy yet observed.1...
Dogs don’t read the words on a page. Neither did Coco, the famous gorilla that learned to communicate using simple hand signs. So what affords humans...
Covering a flat surface with some pattern of geometric shapes with no overlaps or gaps is called tiling. Tiling shows up in many places, from the tiles...