The rover sends photographs of Mars back to Earth. These pictures show scientists the landscape of the planet. The rover also collects specimens and looks for evidence of water so we can determine whether life could ever exist on Mars.
The Curiosity rover launched<span> on a two-stage Atlas V-541 </span>launch<span> vehicle, provided by United </span>Launch<span>Alliance, a joint venture of Boeing Co. and Lockheed Martin Corp.</span>
Sunlight reaches earth's atmosphere and is scattered in all directions by all the gasses and particles in the air. Blue light is seen more than others because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.