15 interesting facts about Mars Posted on 15. November 2015 by admin 1. Over 100,000 people have applied for a one-way trip to colonize Mars in 2022. 2. On Mars, sunsets are blue. 3. A year on Mars has 687 earth days. 4. Mars has the tallest known mountain on a planet of our Solar System, with a height of 22 km. 5. Mars is populated entirely by robots. Seven to be precise. 6. Mars is red because it is covered in rust. 7. On its one-year anniversary, the NASA’s Curiosity Rover sang the “Happy Birthday” tune to itself on Mars. 8. The average temperature in Mars is -81°F (-63°C). 9. Your weight in Mars is over 60% less than on Earth. 10. Mars is about half the size of the Earth. 11. The soil on Mars is particularly good for growing asparagus. 12. Mars had an oxygen-rich atmosphere around 4 billion years ago. 13. Mars has a flag. It was designed by a NASA engineer. 14. Scientists want to introduce global warming on Mars to make life habitable for colonization. 15. google.com/mars/ offers visible imagery view, infrared and elevation views of the planet Mars.