Chapter 1808 Juno

Chapter 1808 Juno Star

Arriving in the sky above the South Pole, Zhao Zhongyao and Feifei saw that there was a huge crater on the ground of the South Pole.

In the middle of this huge crater, there is also a huge mountain. The height of this mountain reaches eighteen kilometers.

Zhao Zhongyao flew the spaceship over the south pole of this asteroid. He saw the tall mountain in the middle of this huge crater at a glance.

'Feifei, I feel that this mountain peak is really very magical. Maybe the amethyst gemstone we are looking for is on this mountain peak. Zhao Zhongyao said so.

After hearing what his father said, Feifei also said, 'It's very possible, let's go and have a look! '

So, Zhao Zhongyao drove the spaceship again, and flew towards this tall mountain in the crater. Soon, their spacecraft landed on this tall mountain.

Just when their spacecraft landed on this tall mountain. I didn't see anything special on this mountain. Just a huge mountain of peridotite.

Feifei looked at this huge mountain, and he said, 'Dad, how could such a huge mountain be formed in this huge crater! At that time, if a huge small celestial body hit this Vesta, it should just form a huge crater! Why is there a huge mountain in the middle of this crater. '

After hearing Feifei's words, Zhao Zhongyao said again, "It may be because when that huge small celestial body hit this Vesta, it caused a huge explosion." Of course, when this huge crater was formed, magma had already been ejected from the center. In the middle of this huge crater, a huge volcano must have formed.

When this huge volcano began to erupt, such a huge mountain was formed in the middle of this huge crater. '

Zhao Zhongyao's explanation made Feifei feel very reasonable. It's just that he thought, since this is a volcano, there should be a crater on the top of the mountain. But now they don't seem to see that there is a crater on the top of the mountain.

'Dad, your explanation makes sense. But if this is the case, shouldn't there be a crater at the top of this mountain! But we didn't see a crater on this mountain! ’ Said Feifei.

After hearing Feifei's words, Zhao Zhongyao thought for a while and said, 'If it is a volcano, there should be a crater. But people must not forget that the formation of this volcano itself is due to the accumulation of underground lava. Not to say that this place originally had a mountain. Then there is the Mars eruption event. If that were the case, there would of course be a crater on the top of this mountain.

But this mountain was not formed by the original volcanic eruption, but by the eruption of underground magma caused by the impact of rocks. The entire mountain was formed due to rock eruptions. After such a mountain has stopped erupting, there will be no crater. Because of that crater, when the underground lava stopped erupting upwards, it was completely congested.

However, even so, there should be a relatively flat depression at the top of the mountain. After all, this place should have been a crater at the time. '

After Zhao Zhongyao said this, Feifei observed the surrounding terrain again, and felt that the location of their spaceship was really in a huge depression. It's just that the slope of this depression is very gentle, so it's not so easy to see.

‘Dad, it seems that everything is really as you said, this place may be the original crater. It's just that this crater has been filled with lava. ’ Feifei said again.

‘Yes, it must be so, we are actually in this crater now. Zhao Zhongyao also echoed.

'Dad, how do you look at this place, there are no amethyst gems! Shall we look elsewhere! ’ Feifei feels that this place is just a huge sunken crater, and there is nothing more special about it. If there is an amethyst gem in this place, it should be seen at a glance. But he couldn't see any amethyst gems here at all.

‘What you’re saying is that there doesn’t seem to be any amethyst gemstones in this place, so we should look elsewhere. ' Zhao Zhongyao said.

'Okay, let's go look elsewhere. ’ Feifei also said the same.

So, Zhao Zhongyao drove the spaceship again and flew to other places on Vesta. They flew from the South Pole to the North Pole. But still did not see any shadow of amethyst gemstone. The North Pole of Vesta is nothing more than some craters. Apart from some smaller craters, there is nothing special about it.

‘Dad, there are obviously no amethyst gemstones on Vesta! Are we still looking for amethyst gemstones on this asteroid? ’ Feifei asked again.

Zhao Zhongyao thought for a while and said, "It seems that there is no hope for this Vesta. There will be no amethyst gems on it. We still have to go to another asteroid to see it." '

'Then we should go and see that asteroid now. ’ Feifei asked again.

Zhao Zhongyao looked at the starry sky navigation map on the display of the spacecraft again and said, "Now the famous asteroid closest to us is Juno. Let's go to this asteroid to have a look." '

After hearing what Zhao Zhongyao said, Feifei said, ‘Okay, then let’s go to Juno to have a look. '

So, Zhao Zhongyao drove the spaceship away from Vesta again, heading tens of millions of kilometers away.

Juno flies away.

Just on the way to Juno, Feifei looked at Zhao Zhongyao again and asked, "Dad, before we fly to Juno, can you teach us about Juno first?" . '

After hearing Feifei's words, Zhao Zhongyao said, "Okay, let me tell you something about Juno, and you first have a general understanding of this Juno." '

After finishing speaking, Zhao Zhongyao thought for a while, and told everyone some knowledge about this Juno star.

Juno is the third asteroid discovered by humans and one of the largest asteroids in the asteroid belt. It is an s-type asteroid composed of heavier rocks. It was discovered by German astronomer Carl Ludwig Harding on September 1, 1804 with an ordinary 2-inch telescope, and it is named after Juno, the highest-ranking god of marriage in Roman mythology.

When Juno was first discovered, it was considered a planet together with Ceres, Pallas, and Vesta. In 1811, the German astronomer Johann Hieronymus Schroeter estimated the diameter of Juno to be 2290 km. As more similar objects were discovered, they were all reclassified as asteroids or dwarf planets. Juno's small size and irregular shape prevent it from being classified as a dwarf planet.

Juno is one of the asteroids with high mass, its mass accounts for about 1.0% of the entire asteroid belt, and it is also in the top 10 in terms of size. It competes with Judiciary for the title of largest rocky S-type asteroid, but recent measurements have placed Juno in second place. Among the s-type asteroids, it has an unusual reflectivity, which may indicate that its surface has different properties, and it is a major member of the Juno family.

Juno rotates prograde, the North Pole points to 27° yellow latitude, 103° yellow longitude, but there is a 10° shake (uncertainty), and the angle between the rotation axis and the ecliptic reaches 51°.

Spectroscopic studies have shown that the composition of chondrites on the surface of Juno, as well as iron-containing silicates such as olivine and pyroxene, which are found in ordinary meteorites, may be the source of chondrites. On October 2, 2001 at the middle of the sun, the measured maximum surface temperature was about 293K, which can be converted to 301K (28C) at the perihelion position of the heliocentric coordinates. Infrared images have revealed craters or eruptive shapes on the surface that may be up to 100 kilometers in diameter, the result of geologically young impacts.

Juno was the first asteroid to be observed to occult. Passed in front of sao 112328 on February 19, 1958. Since then, several occultations of Juno have been observed, and the most fruitful one was completed on December 11, 1979 by 18 observers.

Radio signal echoes from Juno's surface are picked up by spacecraft orbiting Mars to estimate its mass using the tiny perturbations Juno causes to Mars' motion.

Juno's orbit changed slightly around 1839, most likely caused by disturbances from other asteroids.

In 1996, the Hooker Telescope at Mount Wilson Observatory used an adaptive optics system to take a picture of Juno. The image spanned the full rotation period of Juno, showing an irregular (blocky) shape and a dark spot, estimated to be A newly generated impact trail.

While driving the spacecraft, Zhao Zhongyao told everyone some knowledge about this Juno star, and everyone had a general understanding of this asteroid.

After Zhao Zhongyao finished talking about this Juno star, he drove the spaceship to this Juno star again.

Soon, the spaceship flew to the mysterious planet Juno. At this time, the spacecraft was hundreds of kilometers away from Juno. Seen from this place, Juno is an extremely irregular shape, far less regular than Vesta.

Just looking at this Juno star from a distance makes people feel that there may not be the amethyst gem they are looking for on this Juno star. After all, such an asteroid that looks extremely irregular is unlikely to produce such magical things as amethyst gemstones.

‘Dad, will there be the amethyst gem we are looking for on this Juno star? ’ Said Feifei.

After hearing Feifei's words, Zhao Zhongyao said again, 'I feel that this Juno star probably doesn't have the amethyst gem we are looking for. '

‘Then shall we go to this Juno star to have a look? ’ Feifei said.

'Regardless of whether there is or not, since you are here, let's go up and have a look! This is also a famous asteroid, since it is here, we need to know more about it. 'Zhao Zhongyao looked at Feifei and said.

'Okay, then let's go to this asteroid and have a look! ’ Feifei also feels that now that he has arrived at this place, he should go up to have a look.

So, Zhao Zhongyao drove the spaceship again, and flew towards the surface of this Juno star.

Soon, they landed on the surface of this Juno star.

Juno is a planet made of rocks. Apart from the irregular shape, there is nothing special about it.

It's just that Zhao Zhongyao knew that there should be a huge pothole on Juno. This huge pothole has a diameter of more than 100 kilometers. Whether this pothole is a crater or not, no one knew before.

And Zhao Zhongyao has now come to this Juno star, and he feels that he can go to this pothole to see for himself. See if the hole is a meteor crater.

‘Dad, this Juno star really has nothing to look at, is it just a big irregular rock! ’ Feifei looked out from the porthole of the spaceship, and felt that there was really nothing to see on Juno, all he could see were some protruding rocks. There are also some craters of different sizes.

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'I think we should see what is that huge pothole on Juno. Now that we're here, let's unravel the mystery. 'Zhao Zhongyao looked at Feifei again and said.

'Okay, let's go and see that huge pothole! ’ Said Feifei.

So, Zhao Zhongyao drove the spaceship again, on Juno, to find the huge pothole. Because I don't know where this huge pothole is. They can only fly casually over Juno to find it.

However, this Juno star is not very big, and the speed of the spacecraft is very fast. And that huge pothole is a hundred kilometers in diameter. It is also easy to see from high altitude.

So, Zhao Zhongyao flew the spaceship over Juno. He just flew for a few minutes. Feifei saw a huge depression near the North Pole of Juno. At first glance, it is a huge pothole.

'Dad, look, is this the huge pothole we're looking for. ’ Feifei looked at the huge depression on the ground again and said.

Zhao Zhongyao also saw this huge pothole, so he also said,'It should be this sunken place, let's fly down to have a look. '

After Zhao Zhongyao finished speaking, he drove the spaceship towards this huge pothole again.

From a high altitude, this is a huge pothole. But when the spacecraft flies into this huge pothole, you will feel that this is not a huge pothole, but a huge basin.

Zhao Zhongyao drove the spacecraft and landed in the middle of this huge basin. When the spacecraft stopped on the ground, Zhao Zhongyao and Feifei saw a layer of sand on the ground outside.