Computing power of the solar system

1.

The speed of the solar system in the universe is about 240 km / s

all the eight planets in the solar system are in nearly circular orbits on the same plane and revolve around the sun in the same direction. With the exception of Venus, other planets have the same direction of rotation and revolution. Most comets revolve around the sun in the same direction, most of them have elliptical orbits, and generally have a long cycle

the Milky way is a bar spiral galaxy with a diameter of about 100000 light-years, including 100 billion to 400 billion stars. The sun is a typical star in the Milky way. It is located on the Orion Arm of the branch cantilever. It is 26100 light-years away from the center of the Milky way. The solar system moves at a speed of about 240 ㎞ / s and rotates every 226 million years

There are three kinds of objects in orbit around the sun: planets, dwarf planets and small objects in the solar system

planets are celestial bodies with enough mass around the sun

the solar system is centered on the sun, and a collection of all celestial bodies constrained by the sun's gravity: 8 planets, at least 173 known satellites, several identified dwarf planets (Pluto, Ceres, Ezra, pregna and ornithus) and hundreds of millions of small celestial bodies in the solar system. These small objects include asteroid belt objects, Kuiper Belt objects, comets and interstellar st

extended data:

the position of the solar system in the Milky way is a very important factor for the development of life on the earth. Its orbit is very close to a circle, and it maintains roughly the same speed as the spiral arm, which means that it is almost motionless relative to the spiral arm

because the spiral arm is far away from the potentially dangerous supernova dense area, the earth is in a stable environment for a long time and can develop life. The solar system is also far away from the crowded center of stars in the galaxy. Close to the center, the strong gravity of nearby stars will disturb the Oort cloud, which will send a large number of comets into the inner solar system, leading to the collision with the earth and endangering the developing life

The intense radiation in the galactic center will also interfere with the development of complex life. Even in the location of the solar system, some scientists believe that 35000 years ago, the debris from the supernova explosion, the strong radiation towards the sun, and various objects as small as st and as large as comets once endangered life on earth

2. The boundary radius of the solar system is determined as follows: 1. 2. According to the hypothesis of comet origin, the Kuiper comet belt is 50-1000 astronomical units; Oort cloud is 100000 astronomical units ~ 0.5 light years. 3. According to the solar wind zenith, it is 100-160 astronomical units. 4. The gravity range of the solar system calculated theoretically is 150000-230000 astronomical units. Note: 1. The astronomical unit is about 149.6 million km, and the light year is about 9.46 * 10 ^ 12 km. Note: now the ranging method is quite accurate, and the distance between distant stars can be measured (in addition to the precision). The laser ranging can calculate the distance between the moon and the earth to the centimeter pole. It should be said that the measurement of these distances is also quite accurate, but we have rounded them when we express them.

3. I always thought that the solar system diagram in the textbook was drawn according to scale, but only yesterday did I know that this is not the case
let's take a look at the real situation. Pluto is still regarded as the ninth largest planet. Although Pluto was expelled from the family of stars in 2006, at least I miss it very much
if we can rece the solar system by more than 10 billion times, then the radius of the sun is about 1 meter, which looks like the size of the human hydrogen balloon we ride in the scenic spot. It's not bad, it's quite big, but unfortunately, the earth is smaller, its radius is only 5 mm, just like a small glass marble. Far away Pluto is the most pitiful. Its radius is less than 1 mm, about the size of sesame. Mercury is a little bigger than Pluto, but its radius is only 2 mm, but it's closest to the sun, which is also very small by comparison. I hope the biggest Jupiter can compete. Fortunately, Jupiter has a radius of 56 mm, which looks like a coconut or a shot put
at this time, if we draw the solar system, the sun will still appear larger. It doesn't matter. If we draw a small part of the edge, we can also add a little flaming flame. Draw mercury 45 meters from the sun - the size of a pea. The earth has to be painted 117 meters away from the sun. The paper is not long enough, but it's nothing, because Pluto, the sesame, has to be painted 4.6 kilometers away. This is a bit excessive. I'm afraid the teacher has to drive a car when he comes to Pluto in class. At least the principal should be equipped with a motorcycle. Let's take a closer look. There is Jupiter 610 meters away, and Saturn is 1km away
well, let's rece the proportion by ten times, and the sun will become a basketball. At this time, the earth is about 0.5 mm in radius - almost like rapeseed, about 11 meters away from the sun, Pluto is about 0.05 mm in radius, about 463 meters away from the sun. If printed into a book, 16 open, the kind of continuous folding, 2315 pages to put down, folded up the thickness is 2.3 meters. Want to know where the edge of the solar system is at this ratio? It is generally accepted that Pluto is at the midpoint of the radius of the solar system (the largest is that the radius of the solar system is 50000 times the distance between Pluto and the sun). Therefore, if the solar system is regarded as a big pie, its radius is 923 meters
therefore, it is not the wrong printing of the book, there is really no way to print in proportion
there are also data that say: there are 100 billion to 400 billion stars like the sun in the Milky way, and there are 140 billion galaxies like the Milky way in the universe
. Living in such a big world, a person, a person's life, even as a biological existence called "human", can't be summed up by a "tiny". If you think about it like this, what can't pass< All in all, the radius is 2 light-years and the circumference is about 12 light-years.
thanks to Bill Bryson's a brief history of all things.

4.

The order of the nine major planets in the solar system from large to small is:

Jupiter, planet diameter: 142984km (equator), mass: 1.900e27kg

Saturn, planet diameter: 120536km (equator), mass: 5.68e26kg

Uranu, planet diameter: 51118km (equator), Mass: 8.683e25kg

Neptune, planet diameter: 49532km (equator), mass: 1.0247e26kg

earth, planet diameter: 12756.3km, mass: 5.9736e24kg

Venus, planet diameter: 12103.6km, mass: 4.869e24kg

Mars, planet diameter: 6794km, Mass: 6.4219e23kg

mercury diameter: 4880km, mass: 3.30e23kg

Pluto diameter: 2274km, mass: 1.27e22kg

5. So far, we have measured that the diameter of the solar system is about 12 billion kilometers. Because the diameter is too small, it is generally not measured in light years.

6.

No

the diameter of the solar system is 30 billion km = 0.003 light year

1 light year = 9 4542 5495 5488 km

It is also said that the diameter of the sun is 1391960 km (about 014 million km), but the diameter of the solar system is not easy to determine, because the boundary of the solar system has not been determined. If calculated by gravity, the radius of the solar system can reach 2 light years (about 94608 billion kilometers), and the diameter is 4 light years, 19 billion kilometers

the solar system is a collection of celestial bodies centered on the sun and constrained by the sun's gravity. It includes eight major planets (from near to far from the sun: Mercury, Venus, earth, Mars, Jupiter, Saturn, Uranus and Neptune), at least 173 known satellites, five identified dwarf planets and hundreds of millions of small objects in the solar system

extended data:

the largest planet in the solar system is Jupiter, which is very big. Many people have this misunderstanding that the earth is relatively large. In fact, the volume and mass of Jupiter are far above the earth. In fact, Jupiter's volume is more than 1000 times that of the earth, and its mass is hundreds of times that of the earth

we know that the distance between the earth and the sun needs 8 minutes, while Pluto, the familiar planet, needs 5 hours, which is about 40 times the distance between the earth and the sun. What's the concept? If the distance between the earth and the sun is just like the distance between you sitting on the sofa and the door is 4 meters. So Pluto is 160 meters away

in the further distance, it still belongs to the category of the solar system. In the distance from half a light-year to one light-year, there is the Ott nebula of the solar system. As the name implies, one light-year is still the current speculation. Some people say that the Ott Nebula may exceed this distance

to make another figurative analogy, at home, if the distance from the earth to the sun is 4 meters, then the solar system has a radius of 250 kilometers. It can be said that it covers a province

7. Neptune: 450.4 million km (30.13 AU).

8. More accurate data:
the first mercury: 57910000 km (0.38 AU)
the second Venus: 108200000 km (0.72 AU)
the third earth: 14960000 km (1 AU)
the fourth Mars: 227940000 km
the fifth Jupiter: 778330 km, 000 km
the sixth Saturn: 1427000000 km from the sun
the seventh Uranus: 2870990000 km from the sun
the eighth Neptune: 45040000000 km (30.06 AU)
5913520000 km (39.5 AU) from the sun (Pluto should know)

9. Let's start with a concept: astronomical unit. 1 astronomical unit is the average distance between the earth and the sun, which is 149 million kilometers. For formal scientific research occasions, astronomical units are generally used, and KM is used for science popularization. The distance between the eight planets and the sun is given below
mercury: 58 million km
Venus: 108 million km
Earth: 149 million km
Mars: 228 million km
Jupiter: 779 million km
Saturn: 1434 million km
Uranus: 2.872 billion km
Neptune: 4.495 billion km