IKEA sells dozens of mirrors for you to choose from. If you like the look of a round mirror for your space, here are nine options to consider.

The title of this article is a bit misleading: no animals can actually see in complete darkness. Animals with so-called “night vision” take a small amount of light and maximize it through evolutionary ...

Imagine a space telescope with a mirror stretching 50 meters across! That's larger than the width of a U.K. soccer field and ...

Compound, or catadioptric, telescopes combine lenses and mirrors for a compact option, suitable for both planetary and ...