Venus
Venus is called after the Roman Goddess of love and beauty. Venus is 0.72 AU from the Sun. The diameter of Venus is 12,104 kilometres, or 7,521 miles. Venus’s average orbital speed is 35 km/s. Venus orbits round the sun in 224.68 days. A day on Venus would take 243 Earth days. The atmosphere of Venus is mostly …show more content…
Mars is 1.5 AU from the Sun. Mars’s average orbital speed is 24 km/s. Mars orbits round the sun in 686.98 days. A day on Mars would take about 24 hrs. Mars has a very thin atmosphere, so it doesn’t trap heat. The air is mostly carbon dioxide, so it’d be impossible for creatures like us to breathe except plants and other organisms can breathe carbon dioxide. The average surface temperature is way below zero. So even though Mars does have water, it will freeze as ice. There are features like Olympus Mons, Valles Marineris, and Borealis Basin. Mars has two moons: Deimos orbits Mars once every 31 h, while Phobos speeds around Mars once every 7 h. Phobos is about 25 km in length, and Deimos is about 13 km in