Chapter 8 Gravitation and Space Cosmology The expedition drill ship that penetrated 1,500 kilometers deep into the rock formation was based on the famous astrophysicist "Galileo"

Named after it, it is the largest expedition ship ever built, equipped with a high-powered excavator and a well-established survival support system, so it has traveled a record distance deep into the ground.

When the www.biquge.info reached a depth of 1,500 kilometers (or altitude), the ship's chief scientist (let's call him Newton) told the captain about an incredible thing: when the excavator stopped working, the crew was suspended in the middle of the cabin and fell asleep, and when they opened their eyes, they always involuntarily lay on the wall of the cave in the direction of the bubble world.

The captain said disappreciatively: homesickness and sleepwalking.

They want to go home, so they always move in the direction of home in their sleep.

However, there is no air in the expedition drill ship, as in the bubble world, and there are only two ways to move the body: one is to step on the wall of the ship, which is impossible when suspended and sleeping; Another way was to spew out the excrement from his body as a drive, but Newton found no such signs.

The captain still disagreed with Newton's words, but this oversight nearly buried him alive.

On this day, the excavation came to an end, and because the crew was very tired, the pile of broken rock dug up was not immediately transported to the bottom of the ship, and everyone rested, wanting to wait until they woke up before transporting it.

The captain also hangs in the middle of the cabin like everyone else, and wakes up to find that he is buried in the broken rock with the rest of the crew!

It turned out that when they were pretending to sleep, the broken rock in the bow of the ship moved with them to the bottom of the ship in the direction of the bubble world!

Newton soon discovered that all the objects in the expedition ship had a tendency to move in the direction of the bubble world, but they were moving too slowly to be noticed.

"So Newton discovered gravity without the help of an apple!"

How can it be that easy?

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But in the history of our science, the birth of the theory of gravitation is much more difficult than yours, and this is determined by the circumstances in which we live.

When Newton discovered the phenomenon of directional movement of objects in a ship, he assumed that it came from the 5,000-kilometer radius of the bubble world.

As a result, the early theories of gravity had a ridiculous fallacy: it was not mass that produced gravity, but space.

"As you can imagine, in such a complex physical environment, your Newton's thinking is much more complex than ours."

Yes, it wasn't until half a century later that scientists cleared the fog and truly recognized the nature of gravity and determined the gravitational constant with instruments like yours.

It was also a long time for the theory of gravity to be recognized, but once the existence of gravity was realized, the dense cosmology was over, and gravity did not allow infinite solids to exist.

After the space cosmology was finally recognized, the universe it described had a great allure for the bubble world.

In the bubble world, there is space in addition to the conserved physical quantities of energy and mass.

The spatial radius of the bubble world is only 5,000 kilometers, and digging a hole in the rock formation will not increase the space, but only change the position and shape of the space.

At the same time, due to weightlessness, the core civilization of the earth is suspended in space, rather than attached to the cave wall (equivalent to your land), so in the bubble world, space is the most precious thing, and the entire history of bubble world civilization is a bloody history of space competition.

And now that the space for shocking can be infinite, how can it not be exciting!

As a result, there was an unprecedented wave of exploration, with a large number of antimatter ships advancing outward through the strata, trying to pass through the 32,000 kilometers of rock formations predicted by the cosmology of space to reach the heaven with zero density.

Speaking of which, if you're smart enough, you should be able to deduce the truth about the bubble world.

"Is your world located at the center of a planet?"

Our planet is about the size of the Earth, with a radius of about eight thousand kilometers.

But the planet's core is empty, with a radius of about 3,000 kilometers and a symmetry of about 5,000 kilometers from the south pole to the north pole; We are creatures in the core of the earth.

However, after the discovery of gravity, it will be many centuries before people finally understand the truth about their world.

Just as the ten planets of the Sun only orbit around the edge of the Milky Way; However, many galaxies and other extragalactic star cloud systems drift and expand around an infinite galaxy of unknown universe 20 billion light-years away, which is called Hubble redshift.

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