The Nine Planets is an encyclopedic overview with facts and information about mythology and current scientific knowledge of the planets, moons, and other objects in our solar system and beyond.

2020年3月17日 · The small planet has a diameter of 4.879 km / 3.032 mi. Venus. The second closest planet to the Sun. Venus is on average at a distance of 108 million km / 67 million mi or 0.72 AU away from the Sun. It is the hottest planet of the Solar system since its atmosphere keeps the temperatures almost consistently the same.

2019年12月6日 · The Planets of the Solar System Detailed information and facts about the eight planets and five dwarf planets in our solar system.

2020年9月29日 · The closest planet to the Sun is Mercury, followed by Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and the dwarf planet Pluto. This is the order of the planets. The smallest planet in our Solar System is Mercury, which is only one third the size of Earth, while the biggest planet in the Solar System is Jupiter, which is 11 times bigger ...

2019年10月8日 · The distance among each of the eight planets in our Solar System will alter depending on where each planet is in its orbit revolution around the Sun. Depending on the time of year the distance can also differ significantly. The main reason for the planets to vary their distance is due to elliptical orbits.

Sun and large planet comparison (from Extrema) 15k jpg; Earth and small body comparison (from Extrema) 13k jpg; Voyager 1 mosaic of the solar system from 4 billion miles out 36k jpg; html Voyager 1 images of 6 planets from 4 billion miles out 123k jpg; html; Pale Blue Dot, reflections on the above image by Carl Sagan.

2019年9月25日 · Because the planet has no atmosphere to retain that heat, nighttime temperatures on the surface can drop to -290 degrees Fahrenheit / -180 degrees Celsius. These changes in temperature are the most drastic in the entire Solar System. Structure. Mercury is a terrestrial planet having three main layers: a core, mantle and crust.

2019年12月6日 · The rings of Saturn together with the planet itself can fit in the distance between the Earth and the Moon. It is the most oblate planet in the Solar System, with its equatorial diameter of 120.536 km / 74.897 mi, being greater than the planet's polar diameter of 108,728 km / 67.560 mi. If viewed from a small telescope it appears flattened.

2019年12月6日 · The realization that Earth is a planet, and a planet among many others was established “fairly” recently, in the 17 th century – this realization came through by the combined forces of ancient philosophers, mathematicians, and astronomers. Plato correctly deduced that the Earth is spherical but this idea would take root and be proven much ...

2019年9月25日 · Until Pluto’s eccentric orbit was understood and its status dropped from that of a planet to a dwarf planet, Neptune was considered the second furthest planet from the Sun. Neptune has a radius of 15.387 miles or 24.764 kilometers, about four times wider than Earth, and a diameter of 49.244 km or 30.598 mi being the fourth largest planet of ...