Earth, Venus,and Mercury.
Mercury, Venus, and Earth are all closer to the sun than Mars is.
Mars
Mercury Venus and Earth are all closer to the sun than mars
Earth is closer. Mercury, Venus, Earth, Mars...
because mars is closer to earth tan venus
Is Mercury closer than what and when?From the sun the plants are the following distances:Sun 0.0 AUMercury 0.4 AUVenus 0.7 AUEarth 1.0 AUMars 1.5 AUAsteroid Belt 2.8 AUJupiter 5.2 AUSaturn 9.6 AUUranus 19.2 AUNeptune 30.0 AUThe following observations can be made:Mercury is closer than Mars to the sunMercury is 0.6 AU from the Earth, Mars is 0,5 AU from the Earth so Mercury (at its closest) is 0.1 AU closer than Mars (at its closest) to Earth.When Mercury is furthest from Earth it is 1.4 AU away, Mars is 0.5 AU away at its closest so Mercury is 0.9 AU further away than Mars.
Mercury is closer to the sun than mars
because venus is closer to the sun then mars
Venus is hotter than Mars because Venus is closer to the Sun.
Earth is closer to the sun than Mars.
It was closer, and therefore, easier to get to than Mars.