Size can mean different things.
Mars is just over half the diameter of Earth, and has only 11% as much mass.
These are the most common "size" ratios (mars/earth):
Mass: 0.107 (10.7%)
Mars has 11% of the mass of Earth.
Volume: 0.151 (15.1%)
Mars has 15% of the volume of Earth.
Mean Radius: 0.532 (53.2%)
Mars has a radius about half the radius of Earth.
The equatorial diameter of Mars is 6792 km (4220 miles).
The equatorial diameter of Earth is 12756 km (7926 miles).
Mars is approximately half the size of Earth. The diameter of Mars at the equator is 6,800 kilometers, which is 53 percent of the diameter of Earth.
The planet Mars is smaller than the Earth. It is also smaller than the planet Venus, which is the planet that is closest in size to the Earth (but like Mars, Venus is smaller than the Earth).
Mars has a diameter about 0.53 of the Earth's.
Mars has a mass about 0.107 times the Earth's.
it's not much smaller. the only reason it's so much colder on Mars than on earth is because of its distance from the sun.
ther both the same size
Really small. 3.68x10^37% in scientific notation.
The surface gravity on Mars is about 37% or 3/8 that on Earth.
Earth is about 1.88 times larger than Mars.Earth has a diameter of 12,756 km whereas Mars has a diameter of 6,788 km (0.533 Earths)
The gravity of Earth is 2.6 times that of Mars.Mars's gravity is 38% of Earth's gravity.
it's smaller than the Earth, about the size of Mars
Earth is big. Mars is small.
Really small. 3.68x10^37% in scientific notation.
No, not particularly, because the gravity on mars compared with earth is 38%, which isn't much.
the earth is polluted and mars isn't :)
Mars can be compared to Earth, because they both have numerous similarities.
Mars is only about half the diameter of Earth.
Mars is 6,786 Km. in diameter. Big is a relative term. It is big compared to its moons but small compared to the sun
The gravity of Earth is 2.6 times that of Mars.
The surface gravity on Mars is about 37% or 3/8 that on Earth.
earth
11
Surface gravity on mars is 0.376 compared to that of the earth.