Interesting facts about the Mars

There is an assumption that the satellites Phobos and Deimos are asteroids captured by Mars.

The average temperature is minus 60 degrees.

A year on Mars = 687 Earth days. But a day on Mars is as close as possible to a day on Earth – it is 24 hours, 39 minutes. and 35 sec.

Mars has a very thick crust – about fifty kilometers across.