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Earth’s Moon has a diameter of around 3.474 km / 2.158 mi and a radius of 1.737 km / 1.079 mi. In comparison to Earth, the Moon has only 1.2% of Earth’s mass, or in another way of looking at it, the Earth is 81 times heavier than the Moon. The Moon is about one quarter the size of Earth, and it would take around 50 moons to fill the Earth.
Distance, Size and Mass. Earth is the third planet from the Sun, at a distance of 1 AU or 147 million km / 91 million mi. It is situated in the goldilocks zone where temperatures are just right for liquid water to exist and for life to evolve. Depending upon their current orbital positions, either Venus or Mercury are the closest planets to Earth.
It has a mean radius of 69.911 km / 43.440 mi, and its mass is equivalent to 318 Earth masses. Jupiter has more than 11 times the diameter of Earth. Some scientists estimated that if Jupiter were more than 70 times more massive, it would have probably turned into a star rather than a planet.
Earth, for comparison, has a radius of only 2.439 km / 1.516 mi, and a diameter of just 12.742 km / 7.917 mi. All the planets in our Solar System combined account for just 0.2% of the Sun’s mass. Earth, for example, is 330.000 times less massive than the Sun. Other Comparisons
How does the Moon compare to Earth? Our Moon’s diameter is more than a quarter of Earth’s diameter, while its mass is 1/81 that of Earth’s. It basically weighs 80 times less than our Earth. The Moon’s radius is only 27% of our Earth’s radius. If our Earth were hollow, it would take around 50 Moons to fill it.
Earth's diameter is about 12,742 kilometers (7,918 miles) and its circumference is approximately 40,075 kilometers (24,901 miles).
For a comparison, Mercury’s size is about a third of Earth, and Earth has a density of 5.51 g/cm³. Mercury has a radius of 2.439 km or 1516 mi, and a diameter of 4.879 km or 3.032 mi. Mercury's axis has the smallest tilt of any of the Solar System's planets at about 1 ⁄ 30 degrees, while its orbital eccentricity is the largest of all known ...
Then the model Earth would be about 1.3 cm in diameter (the size of a grape). The Moon would be about 30 cm (about a foot) from the Earth. The Sun would be 1.5 meters in diameter (about the height of a man) and 150 meters (about a city block) from the Earth.
Its size would later grant it the status of a dwarf planet, in 2006. It is located just under 2.8 Astronomical Units away from the Sun and thus it receives its light in about 22 minutes, and is approximately 3.5 Astronomical Units away from Earth , light thus takes 29 minutes to arrive to us from Ceres.
The core’s mass is estimated to be about 0.55% Earth masses with a radius less than 20% of the whole of Uranus. The mantle comprises its bulk, with around 13.4 Earth masses. The upper atmosphere is relatively insubstantial, weighing about 0.5 Earth masses and expanding for the last 20% of Uranus’s radius.