1、he solar system is a large mass of the sun, with its huge gravity to maintain the surrounding planets, satellites, asteroids and comets around its celestial system.
太阳系，是质量很大的太阳，以其巨大的引力维持着周边行星、卫星、小行星和彗星绕其运转的天体系统 。
2、Mercury, closest to the sun, is the smallest planet in the solar system in volume and mass. It often appears at the same time as the sun, which was called "Chenxing" in ancient China. Mercury is smaller in diameter than Ganymede and Titan.
水星最接近太阳，是太阳系中体积和质量最小的行星。常和太阳同时出没，中国古代称之它为“辰星”。水星在直径上小于木卫三和土卫六。
3、Venus is the brightest star except the sun and moon in the whole day, just like a dazzling diamond. It is the sixth largest planet in the solar system and the hottest planet in the solar system. It was called Taibai or Taibai Venus in ancient China.
金星是全天中除太阳、月球外最亮的星，犹如一颗耀眼的钻石，太阳系中第六大行星，太阳系中温度最高的行星，中国古代称之为太白或太白金星。
4、The earth is the third planet from the sun and the fifth largest planet in the solar system. The earth is the most dense planet in the solar system.
地球是距太阳第三颗，也是太阳系第五大行星，地球是太阳系中密度最大的行星。
5、Mars is the fourth closest to the sun and the seventh largest planet in the solar system. In ancient China, it was called "Mars Mars" and the phenomenon of Mars "staying" in the constellation is called "Mars guarding the heart".
火星为距太阳第四近，也是太阳系中第七大行星；中国古代称“荧惑星”，火星在心宿内发生“留”的现象称为荧惑守心。
6、Jupiter is the fifth planet away from the sun, which is called the annual star in ancient China, because its revolution is exactly 12 years, that is, one branch of the earth.
木星是离太阳第五颗行星，中国古代称为岁星，因为他公转一周正好是12年，也就是一地支。
7、Saturn is the sixth farthest planet from the sun and the second largest of the eight.
土星是离太阳第六远的行星，也是八大行星中第二大的行星。
8、Uranus is the seventh farthest planet from the sun in the solar system, and also the coldest planet in the solar system. In terms of diameter, it is the third largest planet in the solar system.
天王星是太阳系中离太阳第七远行星，也是太阳系中最冷的行星，从直径来看，是太阳系中第三大行星。
9、Neptune is the eighth planet orbiting the sun and the fourth largest body in the solar system (in diameter).
海王星是环绕太阳运行的第八颗行星，也是太阳系中第四大天体（直径上）。
solar system consists of the Sun and the other celestial objects gravitationally bound to it: the eight planets, their 165 known moons,[1] three dwarf planets (Ceres, Pluto, and Eris and their four known moons), and billions of small bodies. This last category includes asteroids, Kuiper belt objects, comets, meteoroids, and interplanetary dust.
In broad terms, the charted regions of the Solar System consist of the Sun, four terrestrial inner planets, an asteroid belt composed of small rocky bodies, four gas giant outer planets, and a second belt, called the Kuiper belt, composed of icy objects. Beyond the Kuiper belt lies the scattered disc, the heliopause, and ultimately the hypothetical Oort cloud.
In order of their distances from the Sun, the planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Six of the eight planets are in turn orbited by natural satellites, usually termed "moons" after Earth's Moon, and each of the outer planets is encircled by planetary rings of dust and other particles. All the planets except Earth are named after gods and goddesses from Greco-Roman mythology. The three dwarf planets are Pluto, the largest known Kuiper belt object; Ceres, the largest object in the asteroid belt; and Eris, which lies in the scattered disc.
Jupiter
Jupiter (5.2 AU), at 318 Earth masses, masses 2.5 times all the other planets put together. It is composed largely of hydrogen and helium. Jupiter's strong internal heat creates a number of semi-permanent features in its atmosphere, such as cloud bands and the Great Red Spot. Jupiter has sixty-three known satellites. The four largest, Ganymede, Callisto, Io, and Europa, show similarities to the terrestrial planets, such as volcanism and internal heating.[51] Ganymede, the largest satellite in the Solar System, is larger than Mercury.
Saturn
Saturn (9.5 AU), famous for its extensive ring system, has similarities to Jupiter, such as its atmospheric composition. Saturn is far less massive, being only 95 Earth masses. Saturn has sixty known satellites (and 3 unconfirmed); two of which, Titan and Enceladus, show signs of geological activity, though they are largely made of ice.[52] Titan is larger than Mercury and the only satellite in the Solar System with a substantial atmosphere.
Uranus
Uranus (19.6 AU), at 14 Earth masses, is the lightest of the outer planets. Uniquely among the planets, it orbits the Sun on its side; its axial tilt is over ninety degrees to the ecliptic. It has a much colder core than the other gas giants, and radiates very little heat into space.[53] Uranus has twenty-seven known satellites, the largest ones being Titania, Oberon, Umbriel, Ariel and Miranda.
Mercury
Mercury (0.4 AU) is the closest planet to the Sun and the smallest planet (0.055 Earth masses). Mercury has no natural satellites, and its only known geological features besides impact craters are "wrinkle-ridges", probably produced by a period of contraction early in its history.[36] Mercury's almost negligible atmosphere consists of atoms blasted off its surface by the solar wind.[37] Its relatively large iron core and thin mantle have not yet been adequately explained. Hypotheses include that its outer layers were stripped off by a giant impact, and that it was prevented from fully accreting by the young Sun's energy.[38][39]
Venus
Venus (0.7 AU) is close in size to Earth (0.815 Earth masses) and, like Earth, has a thick silicate mantle around an iron core, a substantial atmosphere and evidence of internal geological activity. However, it is much drier than Earth and its atmosphere is ninety times as dense. Venus has no natural satellites. It is the hottest planet, with surface temperatures over 400 °C, most likely due to the amount of greenhouse gases in the atmosphere.[40] No definitive evidence of current geological activity has been detected on Venus, but it has no magnetic field that would prevent depletion of its substantial atmosphere, which suggests that its atmosphere is regularly replenished by volcanic eruptions.[41]
Earth
Earth (1 AU) is the largest and densest of the inner planets, the only one known to have current geological activity, and the only planet known to have life. Its liquid hydrosphere is unique among the terrestrial planets, and it is also the only planet where plate tectonics has been observed. Earth's atmosphere is radically different from those of the other planets, having been altered by the presence of life to contain 21% free oxygen.[42] It has one satellite, the Moon, the only large satellite of a terrestrial planet in the Solar System.
Mars
Mars (1.5 AU) is smaller than Earth and Venus (0.107 Earth masses). It possesses a tenuous atmosphere of mostly carbon dioxide. Its surface, peppered with vast volcanoes such as Olympus Mons and rift valleys such as Valles Marineris, shows geological activity that may have persisted until very recently.[43] Mars has two tiny natural satellites (Deimos and Phobos) thought to be captured asteroids.[44]
我听说英文的维基百科已经可以在中国使用了，所以你直接去wikipedia查就可以了。
Neptune
Neptune (30 AU), though slightly smaller than Uranus, is more massive (equivalent to 17 Earths) and therefore denser. It radiates more internal heat, but not as much as Jupiter or Saturn.[54] Neptune has thirteen known satellites. The largest, Triton, is geologically active, with geysers of liquid nitrogen.[55] Triton is the only large satellite with a retrograde orbit. Neptune is accompanied in its orbit by a number of minor planets in a 1:1 resonance with it, termed Neptune Trojans.本回答被提问者采纳
(水星)
Venus
(金星)
Earth
(地球)
Mars
（火星）
Jupiter
(木星)
Saturn
(土星)
Uranus（天王星）
Neptune
（海王星）
Pluto（冥王星）
Sedna（第10大行星）