Mars, also called the "Red Planet," is a fascinating world with several unusual features that continue to surprise scientists. Here are some of the lesser-known facts about Mars:
1. Big Volcanoes: Mars is home to the largest volcano in our solar system, Olympus Mons, which stands about 13.6 miles high—almost three times the height of Mount Everest.
2. Water in the Past: Proof suggests that Mars once had vast bodies of water. Ancient riverbeds, valleys, and signs of lakes indicate a more hospitable climate in the distant past of this planet.
3. Seasons Like Earth: Mars often experiences similar seasons to Earth due to the tilt of its axis. Anyhow, they last much longer—each season is about twice as long as on Earth planet due to Mars' longer orbit around Sun.
4. Frozen Water: Mars has polar ice caps made of water and dry ice (frozen carbon dioxide), which grows and shrinks with it's changing seasons.
5. Thin Atmosphere: Mars has a very thin atmosphere, composed mostly of carbon dioxide, with very little amount of oxygen. This makes it totally impossible for human beings to breathe without life support systems.
6. Dust Storms: Mars is known for planet-wide dust storms that lasts for months by reducing visibility and affecting its atmosphere.
7. Unique Day Length: One day on Mars (called a "sol") is only a bit longer than an Earth day, lasting 24 hours and 39 minutes.