EVERYDAY SCIENCE

Detailed explanation-1: -Mariner 4, which flew by Mars on July 14, 1965, found that Mars has an atmospheric pressure of only 1 to 2 percent of the Earth’s. Temperatures on Mars average about-81 degrees F. However, temperatures range from around-220 degrees F. in the wintertime at the poles, to +70 degrees F.

Detailed explanation-2: -Mars Seasons Mars has four seasons, roughly twice as long as those on Earth, but with more variation given Mars’ eccentric orbit and the fact its orbital speed varies more as a result (fastest when at perihelion; slowest at aphelion).

Detailed explanation-3: -However, roughly 3.6 billion years ago, the climate shifted from being habitable to inhabitable when liquid water disappeared from the surface. Although the cause of this transition remains unknown, new findings suggest that the loss of an important greenhouse gas transformed Mars into a dry planet.