What is Mars atmosphere made up of? Is there any planet which has a similar atmosphere to Earth?
None of the planets in our Solar System has an atmosphere similar enough to Earth’s to sustain life as we know it. Mars is the closest and you see below how different it is from Earth’s atmosphere. “Comparing this equation with the similar equation of state for the Earth’s atmosphere, you will notice that the gas constants are different, 1149 for Mars and 1718 for Earth. These numbers are different because the Martian atmosphere is almost entirely composed of carbon dioxide, while the Earth’s atmosphere is a mixture of 78% nitrogen and 21% oxygen.” Venus’ atmosphere is even worse: The atmosphere of Venus is very hot and thick. You would not survive a visit to the surface of the planet – you couldn’t breathe the air, you would be crushed on by the enormous weight of the atmosphere, and you would burn up in surface temperatures high enough to melt lead. The atmosphere of Venus is made up mainly of carbon dioxide, and thick clouds of sulfuric acid completely cover the planet. The atmosphe
