A dark shape has been moving around social media in recent days, though it is not moving at all. The image comes from deep space and shows a narrow shadow cutting through a crowded field of stars. It ...

The shadow nebula LDN 1245 is located in the constellation Cassiopeia. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.

A new study suggests that the spot patterns decorating giraffes’ coats may serve a social function. Researchers, writing in the Journal of Zoology, found that female giraffes prefer to associate with ...