Careers in Veterinary Medicine Become a veterinarian and make a difference. Embark on an exciting career path in veterinary medicine, where you can put your knowledge and compassion into practice. Preventing disease and healing animals is at the heart of what veterinarians do. But they also do so much more.
The simple reason behind Marsâs reddish appearance is the layer of iron oxide dust covering the planetâs surface. Fine particles of various oxides of iron (hematite) and trace amounts of some elements like chlorine and sulfur on the Marâs surface is the main reason for its reddish color.
Physical characteristics. Mars is approximately half the diameter of Earth with a surface area only slightly less than the total area of Earth's dry land. Mars is less dense than Earth, having about 15% of Earth's volume and 11% of Earth's mass, resulting in about 38% of Earth's surface gravity. The red-orange appearance of the Martian surface is caused by iron(III) oxide, or rust.