28 янв 2015 г. - Mercury

Описание:

Mercury has no moons and is considered a terrestrial planet.It takes 59 earth days for Mercury to complete a period of rotation, and about 89 days for a period of revolution.
Mercury is the smallest planet in the solar system.Mercury is the second most dense planet. Surface temperature can range from -173 to 427 C. Mercury is the second most hottest planet. Only two crafts have ever visited Mercury.