Chapter 1860: Flying to Neptune
Chapter 1860 Flying to Neptune
Feifei and Tiantian also followed behind their father and began to walk forward. Soon, they were back in the spaceship together.
After Zhao Zhongyao and the others returned to the spaceship, they put the eight amethyst gemstones away. Now they got a total of eight amethyst gems. With four more amethyst gems, they can use the energy of amethyst gems to open the door of time and space.
As long as they can open the door of time and space, they can go on interstellar voyage, go to Sirius, and finally reveal the destruction of the Maya star that happened in the solar system 10,000 years ago.
'Dad, we have already obtained the eighth amethyst gemstone, and we are getting closer to our goal. We must continue to work hard to get all the amethyst gemstones. '
Feifei was very happy when he thought that they had obtained eight amethyst gemstones, so he wanted to get all the amethyst gemstones quickly so that he could go on an interstellar journey.
After hearing Feifei's words, Zhao Zhongyao smiled and said, 'Okay, we're going to Neptune now, and we're going to find the ninth amethyst gem. '
‘That’s right, we need to find the ninth amethyst gemstone quickly. ’ Tiantian also echoed.
After Zhao Zhongyao finished speaking, he started the spaceship and flew towards Neptune.
The speed of the spacecraft was very fast, and it was tens of thousands of kilometers away from Tianwei in the blink of an eye. Because it is far away from the sun, there is less light in space, and only some bright stars and some planets can be seen.
The scenery outside is also pretty, and everyone is still thinking about their next stop - Neptune.
At this time, Tiantian looked at Zhao Zhongyao happily again and said, "Dad, which planet is the ninth amethyst gemstone on? It can't be on Neptune!" '
Zhao Zhongyao took out the original amethyst gemstone, took a look and said, "According to the instructions of the star map, the ninth amethyst gemstone is on the largest satellite of Neptune, which is Triton." '
‘On Triton, isn’t this satellite very distinctive? Tiantian looked at Zhao Zhongyao again and said.
‘Of course, this is a satellite with a diameter of more than two thousand kilometers, and it is the only planet in the solar system that revolves counterclockwise. It is also the coldest planet in the solar system, with a temperature of -235 degrees. Zhao Zhongyao said again.
At this time, Feifei looked at Zhao Zhongyao and said, "Dad, since we are going to Neptune, shouldn't we first understand the situation of Neptune? As for that Triton, we will wait until we get to know it." Not too late. '
After listening to Feifei's words every day, he also said, 'Dad, let me tell us about Neptune first! '
After hearing what Feifei and Tiantian said, Zhao Zhongyao smiled and said, ‘Haha, okay, then let me tell you some knowledge about Neptune first! Since we are going to Triton, we must first understand Triton's parent star - Neptune. '
Next, Zhao Zhongyao popularized some knowledge about Neptune to the two children, let's find out together.
Neptune is one of the eight planets in the solar system, and it is also the largest planet farthest from the sun in the known solar system. The semi-major axis of Neptune's orbit is 30.07 astronomical units, the revolution period is 164.8 years, the mass is 17.147 earth masses (the third place, slightly larger than its neighbor Uranus), and the radius is 3.86 earth radius (the fourth place)
The highest apparent magnitude of Neptune is about 7.67, and it needs to be observed with the help of an astronomical telescope. Neptune is blue to the naked eye, so Westerners named it after Neptune, the god of the sea in Roman mythology.
The chemical composition of Neptune's atmosphere is dominated by molecular hydrogen and helium. In addition, there are traces of methane in Neptune's atmosphere, which is one of the reasons that give the planet its blue color. Neptune has strong storms with measured wind speeds of up to 2100kmh. Neptune's cloud top temperature is -218 degrees Celsius (55K), which is slightly hotter than Uranus' cloud top temperature.
It is speculated that Neptune is likely to have a hot interior, with a core temperature of about 7000C, similar to most known planets. Neptune is slightly more massive, slightly denser than Uranus, and slightly smaller in radius than Uranus.
Discovered on September 23, 1846, Neptune is the only planet discovered by accident using mathematical predictions rather than observations. Astronomers have used perturbations in Uranus' orbit to infer the existence and likely location of Neptune.
The internal structure of Neptune is similar to that of Uranus. A planetary core is a mixture of rock and ice that probably doesn't exceed the mass of an Earth.
Neptune's mantle has a total mass of 10 to 15 Earth masses and is rich in water, ammonia, methane and other components. As is conventional in planetary science, this mixture is called ice, although it is actually a highly compressed superheated fluid.
This highly conductive fluid is also commonly referred to as the water-ammonia ocean. The atmosphere consists of about 10% to 20% from the top to the center, and the upper atmosphere is mainly composed of 80% hydrogen and 19% helium. Methane, ammonia and water levels increase with decreasing altitude.
The lower end of the inner atmosphere is hotter and denser, gradually mixing with the superheated liquid in the planet's mantle.
The pressure in Neptune's core is millions of times the atmospheric pressure on the Earth's surface. By comparing the rotational speed and oblateness, it can be seen that the mass distribution of Neptune is not as concentrated as that of Uranus.
On Neptune, there are egg-shaped cyclones similar to Jupiter's Great Red Spot and Saturn's Great White Spot, which rotate counterclockwise in a period of about 16 days, and are called "Great Dark Spots". Since the Great Dark Spot revolves around Neptune every 18.3 hours, which is longer than Neptune's rotation period, the latitude near the Great Dark Spot blows a strong westerly wind with a speed of 300 meters per second.
The Great Dark Spot may be a mass of
A rising plume low in the atmosphere, but its true nature remains a mystery. However, on November 2, 1994, the Hubble Telescope observed Neptune and found that the Great Dark Spot had disappeared.
It may just dissipate, or it may be temporarily obscured by other parts of the atmosphere. A few months later Hubble discovered a new dark spot in Neptune's northern hemisphere. This suggests that Neptune's atmosphere changes frequently, perhaps caused by subtle changes in the temperature difference between the top and bottom of the clouds.
Neptune has 14 known natural satellites. Triton is the only large satellite, which was discovered by William Russell 17 days after the discovery of Neptune. Unlike other large satellites, Triton runs in a retrograde orbit, indicating that it was captured by Neptune, probably once A Kuiper belt object.
It will be close enough to Neptune to be locked into a synchronous orbit, and it will slowly spiral towards Neptune, eventually being ripped apart by Neptune's gravity as it reaches the Roche limit. Triton is the coldest measured object in the solar system at -235c (38k). Neptune's second known moon (by distance) is the irregularly shaped Neptune, which orbits one of the most eccentric moons in the solar system.
From July to September 1989, Voyager 2 discovered six new moons of Neptune. Of these, the irregularly shaped Proton is known for having the largest volume at its density without being made spherical by its own gravity. Although it is the second most massive Neptune moon, it is only 1400 the mass of Triton.
The four moons closest to Neptune, Triton, Triton, Triton, and Triton, orbit within Neptune's rings. The second outer star, Triton, was observed during its 1981 occultation.
At first the cause of the occultation was attributed to the arc on the planetary ring, but according to the observation of "Voyager 2" in 1989, it was discovered that it was caused by the satellite. Five new irregularly shaped moons discovered between 2002 and 2003 were announced in 2004. Since Neptune is named after the Roman god of the sea, its satellites are named after the lesser god of the sea.
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