Celestial body collision

"Look! There are two celestial bodies going to be collided. If that is so, we can witness some astronomical wonders." Lily tells us in the observation room.

"That is wonderful. The two celestial bodies are as large as our moon. The collision must be very exciting." Replies Mei.

"It seems to me that it will take another 24 hours to happen." Says Tony.

"Let our mother spaceship stay here for another 24 hours so that we can witness the astronomical wonders. I do not want to miss it." Suggests Sam and we all agree.

When the captain enters the observation room, we tell him our suggestions.

"Ok, I agree. Our mother spaceship will cruise nearby for another 24 hours so that we can witness the collision. I do not want to miss this opportunity, too." Agrees the captain.

"We have never seen two celestial bodies as big as our moon to collide with each other. The collision must be very strong. I am looking forward to seeing this." I say.

"Me, too. This big collision must be an astronomical wonder. We are lucky to have the opportunity to witness this." Says Mei.

"Let us go to have a rest first since there are still plenty of spare time to kill. We can come here at the same time tomorrow." Lily suggests. We all return to our dormitory big hall.

At the same time next day, we are in the observation room again.

"Look! The collision almost happens. It is amazing for us to witness this astronomical wonder." Lily yells to us happily.

The two big celestial bodies gets closer and closer. Finally, they collide with each other.

"It is coming! It is coming!" Mei yells happily.

At the very moment of collision, the two celestial bodies deform themselves in such a way that the touching faces collapse inwards. At the same time, a large quantity of small bodies fly towards space in fan-out directions to form many small celestial bodies.

Since our mother spaceship is very close to the collision, some small bodies fly towards us. Since there is self-defense system on our mother spaceship, all of those coming small celestial bodies will be destroyed before hitting our mother spaceship.

The collision continues. The collision process becomes severer and severer. The collision area becomes larger and larger. The collapse becomes bigger and bigger. More and more small celestial bodies fly towards our mother spaceship and more and more small celestial bodies are destroyed by the self-defense system on our mother spaceship.

After a long period of time, the two collision celestial bodies are merged with each other. A new bigger celestial body is born. Gradually, those small flying bodies start to fly around the new bigger celestial body. Some of them fall back to the surface of the new bigger celestial body. Some of them start to rotate around the bigger body in a fixed orbit.

"This is spectacular. Could our planet landing ship land on the surface of the new celestial body? I really want to have a walk there." Mei asks curiously.

"Me, too. I want to land there to have a close look at there. There must be some very interesting topographic features there." Replies Lily.

"I agree. This is a excellent opportunity to have a close look at the colliding area. Let us land on it." Replies Tony.

"If everybody wants to go, let us go. There is no problem for our planet landing ship to land there." The action leader tells us after entering the observation room.

"OK, let us do it. It must be funny." Mei yells happily after hearing the comment from the action leader.

After the agreement from the captain, our planet landing ship leaves our mother spaceship and flies towards the new formed celestial body.

"The landscape is so disorder that you can hardly find a landing spot." Tony tells us after seeing the surface closely.

"That is true. Two celestial bodies with the size of our moon collided with each other. The colliding force must be huge. It is not like a group of small celestial bodies colliding with a big planet. The consequences are totally different." Replies Sam.

"These are totally two different colliding mechanisms. There is no big impact if a group of very small celestial bodies hitting a big planet. There is big impact if two celestial bodies with the size of our moon colliding with each other. The two bodies will be totally damaged and merged into one new bigger celestial body. At the same time, there will be a lot of very small celestial bodies coming out of the collision." Lily tells everybody.

"I agree. The second type of collision will cause more damages." I say.

"In the first small-big collision mechanism, the bigger celestial body can still keep its shape. In the second big-big collision mechanism, the two big bodies cannot keep their shapes. They could all be destroyed." Replies Sam.

"If one of the two celestial bodies is gold and another one is diamond, the new formed celestial body will be a gold-diamond body." Lily makes a joke.

"So, you want to make a fortune again." Mei makes a joke on Lily and we all laugh happily.

Finally, our planet landing ship lands on a relative flat spot in the collision area. After launching four connecting belts from left, front, right and back positions, our planet landing ship is held with the new celestial body firmly.

"OK, we can go out now." The action leader tells us after landing on the surface firmly.

We fly out one by one and land on the surface of the new celestial body. The light from a star not too far way shines the surface of the new celestial body as bright as day time.

"The stone looks like the stone on our earth. It is very strong." Tony tells us while walking on the surface slowly.

"I do not care about that. I do care about finding gold and diamond." Lily makes a joke and we all laugh.

After jumping walk on the bumpy surface for a while, we come to a ditch.

"There are some gold flashing points there. They could be gold stones inside the ditch. We could really make a fortune this time." Tony tells us happily.

"Yes, those bright flashing points could be diamonds, too. If we can have both gold and diamond here, we can really make a fortune." Lily makes a joke back and we all laugh again.

"OK, let us jump to the gold and bright area to have a close look." Mei encourage us to go.

"You go ahead. I am not interested in any gold or diamond anymore." I tell everybody.

"I have no interests, too. You go ahead." Tony tells everybody, too.

"For safety reasons, it is better to connect both of you together if you really want to go there. We just wait here." Sam suggests to Lily and Mei.

Lily and Mei connect them with each other by the connecting belts on their waists. I also use my connecting belt to connect Mei, Tony connecting with me, Sam connecting with Tony. We all connect as a team so that on body will stray away.

"The gold points are real gold stones." Lily yells to us in our wireless communication system after reaching the gold flashing area.

"Even so, I am still not interested in it anymore." Sam yells back in our wireless communication system. We all laugh.

"If you do not want come, let us take some back as souvenirs to you." Mei tells us.

After putting some gold stones into their space bags, Lily and Mei jump towards the bright flashing area.

"It is unbelievable. It is really diamond." Mei yells to us.

"I expect that. But I have no interests to diamond, too. You make a fortune for both of you." I yell back in our wireless communication system.

"I lost my interests, too." "Me, too." Here are the voices from Tony and Sam.

"Ok, in that case, we will bring some back as souvenirs." Lily tells us.

From our waiting place, I can see that Lily and Mei play there happily to pick up some diamonds.

All of a sudden, there is a big vibration of the ground.

"There are still some earthquakes on this new celestial body. For safety reasons, it it better for both of you to come back. Let us return to our planet landing ship." I tell them in our wireless communication system.

"OK, we are returning." Replies Lily.

Very soon, Lily and Mei return to join us and we all return to our planet landing ship.

Our planet landing ship gets rid of those connecting belts and takes off gradually into sky. Our planet landing ship stays near the belt of small celestial bodies which rotates around the new planet.

"Look at those small bodies rotating around the new planet. They form a belt around the planet. This belt was created by the collision. The change is huge." Says Tony.

"This belt of small bodies is different from those ice belts in our solar system. This belt is composed of solid particles and small bodies. I do not know how long this belt could be there. Maybe it will disappear in future." Replies Sam.

"It is hard to predict. The whole situation is not stable now. It will take a long time to get new balance of the universal gravity." Replies Tony.

"So, the view here now is an unique sight. It will change and never be the same again. Next time when we meet this new planet again, it could be totally different." Lily replies with pleasure.

"Right now, the shape of the new planet is oval. Long time later, it could be round." Replies Mei.

"Yes, it will become a round planet finally." Lily replies.

After observing the new planet, our planet landing ship returns to our mother spaceship.