Man's historic first look into the crater Copernicus. The image shows a 17-mile wide section, with 1,000-foot mountains rising from crater floor. Analysts have found evidence of erosion, quakes and ...

This image shows Buzz Aldrin standing next to the American flag that he and Neil Armstrong planted on the lunar surface.

A simple science demonstration showing how a special powder increases a liquid’s thickness by changing its surface area and flow behavior.