The solar system is centered on the sun and an assembly of all celestial bodies that are constrained by the sun's gravity. Includes eight planets (in order from near to far from the sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune), and at least 173 known satellites, 5 identified dwarf planets, including Four Kuiper Belt objects, and hundreds of millions of small solar system objects, and comets.
[tài yáng xì]
Dwarf planets only need to meet two conditions. From the first discovery of 1930 to 2006, Pluto was considered the ninth planet in the solar system. However, in the late 20th and early 21st centuries, many objects of similar size to Pluto were discovered in the solar system, especially Pluto was more clearly pointed out to be larger than Pluto.
Larger satellites in the solar system (more than 3,000 kilometers) include Earth's moons, Jupiter's
The formation of the solar system is believed to be based on
During the Big Bang,
The structure of the solar system can be roughly divided into five parts.
Overview of Solar System Structure
Distance (from the sun)
(AU)
The inner solar system is traditionally
The central regions of the solar system are home to gas giants and planet-sized satellites. Many
Is a hypothetical sphere cloud surrounding the solar system, filled with many inactive
The solar system is located in a
The position of the solar system is sparsely scattered stars in the Milky Way, known as
For thousands of years, up to the 17th century, human beings did not believe in the existence of the solar system with a few exceptions. The earth is not only considered to be fixed in the center of the universe, but also absolutely different from the objects or oracles that traverse in the void sky. when
Although scholars agreed that there are other celestial systems similar to the solar system, other planetary systems were not discovered until 1992. Hundreds of planetary systems have been discovered so far, but detailed materials are still scarce. The discovery of these planetary systems depends on
name
Types of
diameter
quality
Distance to central star
Revolution cycle
Remark
Planet list
International Naming
Chinese name
Discovery date
classification
satellite
57910000 km (0.38 AU)
Average daily distance of 108200000 km (0.72 AU)
An average day distance of 149600000 km (1 AU)
An average day distance of 227940000 km (1.52 AU)
Diameter 6794 km
Mass 6.4219 × 10²³kg
Average day distance 778330000 km (5.20 AU)
Average daily distance 1429.4 million km (9.54 AU)
The average day distance is 2.79999 million km (19.218 AU)
51120 km in diameter (equatorial)
Data sheet for the sun and the eight planets (ordered in ascending order from the sun)
The number of satellites is as of May 2006, and the distance and orbit radius are in units of 1 astronomical unit (AU).
