no
The Earth and Jupiter. Earth is about 0.5 AU from Mars, whereas Jupiter is about 3.5 AU.
The Earth is 1 AU from the Sun while Mars is 1.52 AU from the Sun so the distance from Earth to Mars varies from 1.52-1 to 1.52+1 AU, which is quite a range. To put AUs into miles multiply by 93,000,000.
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Mercury: 0.387 AU Venus: 0.723 AU Earth: 1.000 AU Mars: 1.524 AU Jupiter: 5.204 AU Saturn: 9.582 AU Uranus: 19.229 AU Neptune: 30.104 AU
This distance is continuously varying as the two planets orbit the Sun. The minimum distance is about 0.5 au. That's because the (average) distance of Earth from the Sun is 1 au and the (average) distance of Mars from the Sun is 1.52 au.
If I may interpret your question: 1 astronomical unit is the average distance from the sun to Earth = roughly 93,000,000 miles. The average Mars-Sun distance is about 1.52 AU, so Mars is 1.52 X 93,000,000 = 141,360,000 miles from the sun.
It varies with each planet's position in its orbit. Mars is farther out from the Sun, and orbits more slowly than the Earth does. At the "conjunction", when the two planets are closest together, they are about .5 AU apart. But 8 months later, when Earth has raced ahead and is now on the opposite side of the Sun from Mars, the distance is about 1.5 AU.
Mars orbits beyond Earth, so it is more than 1 AU from the sun.
AU(astronomical unit) is not an unit of time but distance. It is a mean distance between Earth and Sun and it's roughly equal 150 million kilometers. If you are asking for straigth line distance between Mars and Earth, it can be anything between about 0.52 AU, when the planets are closest together and 2.52 AU when they are on opposite sides of Sun.
The average distance between Mars and the Sun is about 1.5 astronomical units (AU), where 1 AU is the average distance between the Earth and the Sun. This distance can vary because both Mars and Earth have elliptical orbits.
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.
Phobos orbits Mars. So the distance between Earth and Phobos is essentially the same as the distance between Earth and Mars. This distance varies from 3-1 AU (astronomical units) to 3+1 AU. One AU is about 93 million miles.