America make a great celebration of Its Independence Day with moment properly by landing several thousand rovers on the surface of Mars in Twenty Years ago. The firts touch down that Pathfinder sapcecraft in northen-lowland called Planitia on July 4, 1997 with carrying a small rover named Sojourner.
They found a large number of stowaways in the form which has similarly microbes in Earth. However, scientist trusted that it would be not easy to susatin and cultivate life on Mars. The facts currently, the scientist have pointed out more than a dozen factors that make March as unsustainable for organisme to survive.
In 10 years by gone at NASA, conley had face several difficulties in job to keep Mars and set up prevention aliens organise for declining the quality of Ecosystem on Earth as well as human to seeding in other planet. In addition, scientis was always worried about security of planetary at the very beginning of spage time. Sputnik launched in 1957 seemed only about time before USA and The Soviet Union woul d start