The king size mattress measures 76 inches wide and is 80 inches long, while the queen comes in at 60 inches by 80 inches. The Western king is longer and wider than the queen mattress, but it is not as wide as the king mattress. In terms of overall size, the California king size is smaller than the king. It has a total of 6,048 square inches, while the king size has 6,080 square inches.
Mars is approximately half the diameter of Earth, and its surface area is 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.
Ever since astronomers in the 1800s noticed markings on Mars that looked like canals, people have imagined that there could be life on the planet (Martians!). 1  Of all the planets, Mars' climate is most like Earth. 2  Our other neighbor, Venus, is hotter than humans could ever endure.3  Still, Mars is not exactly like Earth. Of all the planets, Mars' climate is most like Earth. 2  Our other neighbor, Venus, is hotter than humans could ever endure. 3  Still, Mars is not exactly like Earth. 4  The air on Mars is as thin as the atmosphere 55,000 feet above Earth, and it's almost entirely carbon dioxide. ( 5 That's what we exhale.