The so-called astronomical observations, in fact, are the collection of cosmic electromagnetic waves, which are the sounds of the universe, which will tell the listener the story of what happened in this universe, such as violent supernova explosions, quiet and more massive nebulae, and when and where such a black hole was formed.

The reason why human beings want to build all kinds of large-scale observation stations and astronomical satellites is to collect electromagnetic waves, although the human eye can also collect electromagnetic waves, but there is a limit, and the human eye cannot observe all kinds of electromagnetic waves in the entire universe according to their minds.

Hogu doesn't need to worry about this, it allows the cell to act as it wants, and it eliminates the need to design a set of biological structures for astronomical observations.

Under the visual light of visible light, the planets in the planetary system are not very conspicuous, especially in the cosmic background, and it is not easy to identify them carefully.

However, if you add infrared and ultraviolet perspectives, it becomes very easy, because the ultraviolet rays of the stars will be reflected back after touching the planets, and the light of the stars itself has heat, which will warm the surface of the star, and in the infrared perspective, it will produce microwaves that are completely different from the cosmic background.

Hogu soon discovered the asteroid belt, which was nothing more than planetary rings, similar to Saturn's rings.

Suddenly, Hogu found that the planet he was observing was moving slowly, which was undoubtedly quite fast on an observational scale.

This is a big deal, it can affect the planetary level, and the mass can also be at the star level.

"If it's a wandering black hole, it's going to be a problem......"

"Where?"

As Hogu nervously gathered the observational information, a wailing vibration from the cone passed through the entity to the sentient cells.

Huo Gu instantly understood what the problem was, and while breathing a sigh of relief, he became nervous.

The relief is because it's not a scary thing like a black hole, and the nervousness is because the problem is in the cone it designs, which is not a small pile of sand.

If you want to create something at the celestial level, biomolecules alone are not enough, because it is the ground of physics, the atomic bonds between atoms, and at this scale, the strength of the material will be severely weakened, so it needs to be considered mechanics.

Strong metals are 'soft' even if they are strong enough to not break, as in the case of Hogu, who is searching for an asteroid belt, is facing a swing from a cone.

Originally, this situation should have happened a long time ago, and if Hogu had arranged the cone to be built elsewhere, I am afraid that at most it would enter the middle layer, and it would have tilted and collapsed under the action of the latitude and rotation of the planet.

However, coincidentally, Hogu's location is on the equator, and the problem of latitude is circumvented, and the cone only needs to withstand the air resistance caused by the rotation of the planet.

The cone as a whole presents a certain bending arc under the action of air resistance.

This is the cone as a whole, and the parts still look like straight, and the curvature is at the decimal level, which is the same as the surface of the planet looks flat, and it is not easy to notice.

The speed of the giant structure swaying is not violent, but the amplitude is getting bigger and bigger, Huo Gu knows that if it continues like this, it will collapse sooner or later, and the phenomenon caused by the collapse may be described as the collapse of the sky and the earth.

If it is said that this is the same as it was in the ancient world, of course, it doesn't matter, but now there is a group of intelligent beings living on the surface of the earth.

Letting a group of innocent people die because of his own mistakes, Huo Gu's three views can't accept it.

"No, there must be a way to save it."

Hogu used instructions to make a large number of titanium alloy shelters from the rhizomes, and then forcibly ordered those gatherers living near the equator to enter the shelters and strictly ordered them not to leave, while he racked his brains to think of countermeasures.

"By the way, I can thicken and widen, and if the inside is hollow, the mass will not rise, and the cells needed do not need too many, in order to ensure strength, the metal body will be increased to a certain thickness...... Yes, that's it. ”

Cone...... No, the shape is no longer a cone, it is closer to the kind of round chimney of a nuclear power plant.

The hollow area inside the round platform body is expanded under the instruction of Huogu, and the inclined plane presents an inward slope inside, which can ensure that the center of gravity of the whole structure moves down while increasing the stress area and reducing the pressure on the ground.

After hundreds of days and nights, such a period of busyness, Huo Gu can be regarded as able to breathe a sigh of relief.

"Finally stabilized, it scared me."

"Speaking of which, I've got another big thing......"

When Hogu noticed it, he realized that what it had unconsciously made was equivalent to one-twentieth of an octahedron if it included the hollow part.

Originally speaking, Huo Gu didn't want to toss such a big thing at first, so he chose the previous design......

"At least...... I can still afford this guy, and the consumption is smaller than that of the octahedron, and it doesn't have the ability to destroy the atmospheric structure. ”

Having justified his actions, Hogu turned his energies to something else, which was the calculation of planetary distances.

If you want to calculate the distance of the stars, Huo Gu has no good method, after all, it is not an astronomy major, this is beyond the scope of its knowledge, but if it is a calculation inside the planetary system, Huo Gu still knows a little bit of information.

The method is to use radio signals to achieve interplanetary ranging.

The principle of the method is not high, and the use of sound waves to measure the depth of the canyon is a reason, send a beam of radio signals to the observed planets, calculate the distance traveled by the radio waves in the time period of transmission and reception, and then divide by two, you can get the distance between the planets at that time, and then after several observation data, and the position of the stars at that time, you can basically outline the orbit of the observed planet.

The principle of radio is not too complicated, it is basically divided into two structures, transmitter and receiver.

The principle of the receiver is that the voltmeter is connected to a wire that can be used for the flow of electrons, forming a closed loop without power supply, which is a radio receiver.

The launcher is a little more complicated.

The basic principle is that a change in the intensity of the current in a conductor generates radio waves, and a change in the electric field caused by the radio wave generates an electric current in the conductor.

Radio transmission can be achieved by changing the resistance or switching the power supply, and the strength of the radio signal itself depends on the current generated by the transmitter.

Recalling his past knowledge, Hogu began to calculate planetary distances in preparation for his actions.

Space travel is never easy, especially when the technology is still in the working fluid advancement stage.