What are these strange shapes on Mars?

Have you ever seen the Pleiades star cluster?

Peering from the shadows, the Saturn-facing hemisphere of Mimas lies in near darkness alongside a dramatic sunlit crescent.

What do birds do during a total solar eclipse?

The striking X in this lunarscape is easily visible in binoculars or a small telescope, but not too many have seen it. The catch is, this lunar X is fleeting and only apparent in the hours before the Moon's first quarter phase

منطقه الموت یکی از زیباترین مناطق گردشگری ایران است و آسمان بسیار زیبایی هم دارد. قلعه الموت که تا کنون در پی اکتشافات باستان شناسی درصد قابل توجهی از زیر خاک خارج شده و نشانگر شهری در دل یک کوه است.