1.This is Frank and Louie — the oldest Janus cat (meaning he had two faces). He lived a long, happy life and passed away at ...

Check out this beautiful photo of nacreous clouds, also known as rainbow clouds, from southern Indiana. Here's how the ...

The latter are the only kind of clouds observed at Mars producing iridescence, and they can be seen near the top of the new images at an altitude of around 37 to 50 miles (60 to 80 kilometers).