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Q. Are all planets the same size? — Elva C.
How far away is Mercury? — Laurie J.
How far is it to Mars? — Tiffany W.
What is the distance to Jupiter? — Kelbug R.
How long does it take a planet to fly around the Sun? — Zak J.
A. Here are the approximate average Sun-to-planet distances. Arithmetic will reveal the distances from Earth. The planets vary in size. Their diameters are in the table below. The time it takes a planet to make one revolution around the Sun depends on how far it is from our star. Below are the periods of time -- days or years -- that it takes each of the major planets in our Solar System to make one revolution around the Sun:

PlanetDiameterDistanceOrbit
NameMilesMiles
(millions)
Kilometers
(millions)
Astronomical
Units (AU)
Revolution
Period
Mercury3,0323657.910.38789.97 days
Venus7,52367.2108.200.723224.70 days
Earth7,92892.9149.601.000365.26 days
Mars4,218141.5227.941.524686.98 days
Jupiter88,900483.4778.005.20311.86 years
Saturn74,900884.61,429.009.52229.46 years
Uranus31,8001,783.82,870.9919.20184.01 years
Neptune30,8002,793.94,504.3030.074164.79 years
Pluto1,4003,690.55,913.5239.725247.69 years


Learn more about the planets  »»



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