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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:

Planet	Diameter	Distance			Orbit
Name	Miles	Miles (millions)	Kilometers (millions)	Astronomical Units (AU)	Revolution Period
Mercury	3,032	36	57.91	0.387	89.97 days
Venus	7,523	67.2	108.20	0.723	224.70 days
Earth	7,928	92.9	149.60	1.000	365.26 days
Mars	4,218	141.5	227.94	1.524	686.98 days
Jupiter	88,900	483.4	778.00	5.203	11.86 years
Saturn	74,900	884.6	1,429.00	9.522	29.46 years
Uranus	31,800	1,783.8	2,870.99	19.201	84.01 years
Neptune	30,800	2,793.9	4,504.30	30.074	164.79 years
Pluto	1,400	3,690.5	5,913.52	39.725	247.69 years

Learn more about the planets  »»

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