About 35 million miles at the closest. At the far ends of the two planets' orbits, over 250 million miles.
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Right now Mars is 1.159 AU from Earth. 1 AU =
http://www.fourmilab.ch/cgi-bin/Solar/ac…
"1 astronomical unit = SI units
149.60×10^6 km 149.60×10^9 m
Astronomical units
4.8481×10−6 pc 15.813×10^−6 ly
US customary / Imperial units
92.956×10^6 mi 490.81×10^9 ft
An astronomical unit (abbreviated as AU, au, a.u., or ua) is a unit of length equal to about ..."
1 astronomical unit = SI units
149.60×10^6 km 149.60×10^9 m
Astronomical units
4.8481×10−6 pc 15.813×10^−6 ly
US customary / Imperial units
92.956×10^6 mi 490.81×10^9 ft
An astronomical unit (abbreviated as AU, au, a.u., or ua) is a unit of length equal to about
Do the math yourself.
http://www.fourmilab.ch/cgi-bin/Solar/ac…
"1 astronomical unit = SI units
149.60×10^6 km 149.60×10^9 m
Astronomical units
4.8481×10−6 pc 15.813×10^−6 ly
US customary / Imperial units
92.956×10^6 mi 490.81×10^9 ft
An astronomical unit (abbreviated as AU, au, a.u., or ua) is a unit of length equal to about ..."
1 astronomical unit = SI units
149.60×10^6 km 149.60×10^9 m
Astronomical units
4.8481×10−6 pc 15.813×10^−6 ly
US customary / Imperial units
92.956×10^6 mi 490.81×10^9 ft
An astronomical unit (abbreviated as AU, au, a.u., or ua) is a unit of length equal to about
Do the math yourself.
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Completely depends on where Mars and Earth are in relation to each other. If they are on opposite sides of the sun, on the same side, or somewhere in between.
http://www.universetoday.com/14824/dista…
http://www.universetoday.com/14824/dista…
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Read this: http://en.wikipedia.org/wiki/Mars