Extraterrestrial skies Mars appears to be the angular diameter as seen from Earth (0.35°), and sends 40% of the light, approximately the brightness of a slightly cloudy afternoon on Earth. On June 3, 2014, the "Curiosity" rover on Mars observed the planet Mercury transiting the Sun, marking the first time a planetary transit has been observed from a celestial body besides Earth. Mars has two small moons: Phobos and Deimos. From the Martian surface, Phobos has one-third to one-half the angular diameter of the Sun while Deimos is barely more than a dot (only 2′ angular diameter). The orbital period of Phobos
Mars One development or any contracts in place with companies that could provide a spacecraft or rocket. While plans point to SpaceX for both resources, the company has no contracts with Mars One in an industry that typically plans contracts decades in advance. Mars One Mars One is a small private Dutch organization that proposed in 2012 to land the first humans on Mars and leave them there to establish a permanent human colony in the coming decades. Mars One is not an aerospace company and will not manufacture hardware. Mars One consists of two entities: the not-for-profit "Mars One Foundation", and