Discovery and exploration of the Solar System Earth to be orbited by an artificial satellite ("Luna 10"), followed by Mars in 1971 ("Mariner 9"), Venus in 1975 ("Venera 9"), Jupiter in 1995 ("Galileo"), the asteroid 433 Eros in 2000 ("NEAR Shoemaker"), Saturn in 2004 ("Cassini–Huygens"), and Mercury and Vesta in 2011 ("MESSENGER" and "Dawn" respectively). "Dawn" is orbiting the asteroid–dwarf planet Ceres as of 2015. The first probe to land on another Solar System body was the Soviet "Luna 2" probe, which impacted the Moon in 1959. Since then, increasingly distant planets have been reached, with probes landing on or impacting the surfaces of Venus in 1966
Solar Road and Soil Regeneration Hybrid Energy System greater the rate of heat transfer. Therefore, the most efficient system will be one that consists of an extensive network of smaller diameter pipes. This process essentially treats the solar road as a heat source and the soil as a heat sink. SRSRHES technology can be applied to most types of roadway as well as most environmental conditions, however, the operation efficiency is dependent on several factors. Solar radiation hits the equatorial regions of the Earth more directly than polar regions due to the spherical nature of the planet. An SRSRHES installed in polar regions will convert less solar energy