How Big is the Earth? | Size Comparison, Actual Size & Facts
网页2020年9月29日 · Earth's diameter is 12.742 km / 7.917 mi, and it is the fifth largest planet in the Solar System. Learn how Earth compares to other planets in terms of size, mass, and temperature, and see some facts and figures.
Earth Facts | Surface, Atmosphere, Satellites, History & Definition
网页2019年12月6日 · Learn about Earth, the third planet from the Sun and the only known location of life. Find out its size, shape, composition, history, and more.
How Big is the Sun? | Comparisons, What Is Bigger, Facts - The …
网页2020年9月29日 · The Sun is the biggest object in the Solar System, with a diameter of 1.39 million km and a mass of 330,000 Earths. Learn how the Sun compares to other planets and stars, what it is made of, and how it will become a red giant in 5 billion years.
How Big is the Moon? | Comparisons, Size, Facts & Information
网页2020年9月29日 · The Moon is the fifth largest moon in the Solar System, with a diameter of 3,474 km / 2,158 mi. It is bigger than Mercury, Pluto, Eris, Haumea, Makemake, and Ceres, but smaller than Earth, Jupiter's moons, and Saturn's moons.
How Big is Jupiter? | Size Comparison, Actual Size & Facts
网页2020年9月29日 · Jupiter is the biggest planet in our Solar System, with a diameter of around 142.984 km at the equator and a mass equivalent to 318 Earth masses. Learn more about Jupiter's size, composition, moons, rings, and magnetic field in this article.
Earth Facts for Kids | Facts, Temperature, Habitation, Information ...
网页Learn about Earth, the only planet with life, water, and a moon. Discover its size, layers, surface, time, and fun facts.
How Big is the Universe? | Size, Why So Big, Infinite & Facts
网页2020年9月29日 · Learn about the size, expansion, and end of the Universe, and how our perception affects our view of it. The observable Universe is 93 billion light-years in diameter, but the true Universe might be 250 times larger or infinite.
Solar System Facts | Information, Size, History and Definition
网页Learn about the sizes, orbits, and classifications of the eight official planets and Pluto in the solar system. See diagrams, comparisons, and examples of the relative sizes of the planets and other objects in the solar system.
Mercury Facts | Information, History, Location, Size & Definition
网页2019年9月25日 · Mercury is the closest planet to the Sun, at a distance of 57.91 million kilometers or 0.4 AU away. It has a small, dense and cratered surface, a thin exosphere, a magnetic field and a 3:2 spin-orbit resonance.
Uranus Facts | Rotation, Rings, Atmosphere, Size, History
网页2019年9月26日 · Uranus is the third-largest planet by mass and the seventh by radius in the Solar System. Its mass is about 14.5 times that of Earth and its radius is 25.362 kilometers or 15.759 miles.