The ammonia could raise Mars' greenhouse gas level. The rocket engines could be able to move the asteroids 3 miles per second, for a period of ten years, before they shut down and allowed the ...

Common greenhouse gases in the Earth's atmosphere include water vapor, carbon dioxide, methane, nitrous oxide, and ozone. In our solar system, the atmospheres of Venus, Mars and Titan also contain ...

Suffocated and heated by greenhouse gases, its surface ... reflective atmospheres of Venus and Jupiter, "will also be putting on its own show," NASA noted. As Mars draws closer to Earth, it ...