Harvard University professor Avi Loeb said: “No, Umuamua can’t be a fragment of a planet very similar to Pluto.”
Harvard University professor Avi Loeb and the author of the book Alien He just published an article in “Scientific American” explaining why the latest scientific hypothesis about Oumuamua is not valid, and reiterated his theory that the alien spacecraft visited us that day and we named it Oumuamua.
Oumuamua remains the center of debate among the world’s leading astrophysicists led by Avi Loeb. His hypothesis may be the rest of the drifting spacecraft, which explains many peculiarities of the strange interstellar object visited in 2017.
This is an article published by Loev in Scientific American:
Are there many nitrogen icebergs in the Oort Cloud?
Avi Loeb, March 19, 2021
This Nubid Oort, Proposed by Dutch astronomers in 1950 Jan OortRepresents the boundary of the solar system. Its boundary is one hundred thousand astronomical units, or AU. This term is used to understand the distance separating the earth from the sun.
It contains billions of frozen rocks larger than Manhattan Island, and fragments of Lego bricks were discarded during the formation of planets in the solar system.
When the sun heats up and evaporates ice, some Oort objects that orbit close to the sun look like long-period comets. One of the greatest comets in a long time may have broken down 66 million years ago, Caused This Influence of Chicxulub Annihilated the dinosaurs.
The outer mantle of the Oort Cloud falls to half of the nearest star system: Alpha Centauri. Therefore, if other stars have Oort clouds similar to the sun, it means that these clouds are in contact with each other like closely packed billiard balls.
Since the central star exerts a very weak attraction on the farthest rock, the gravitational changes caused by stars near nearby stars can easily break away and fall into interstellar space. These objects inherit the motion of their original star relative to the local stationary system (LSR) because their initial orbital velocity around the star is very low.
in spite of Initial attempt By associating Oumuamua with a star, it is difficult to achieve this with interstellar objects, because the Oort Cloud will fill the Milky Way no matter where you are in the sky.
Another surprise discovered by Oumuamua in 2017 is that the assumed sum of interstellar rocks in a disk similar to the Oort cloud is several orders of magnitude smaller than the value required to explain the number of Oumuamua objects that should be calculated based on the calculation. Have. The origin of objects like Oumuamua must be different from what we know in the solar system.
If the first interstellar object was made of pure nitrogen, then you would think that such objects are common. Nitrogen is usually produced by the CNO cycle in stars together with carbon.Spitzer Space Telescope Shrink a lot The presence of carbon-based molecules near Oumuamua raised more suspicions when we thought there was no evidence of commas reflecting sunlight.
Five theories to “prove” what Oumuamua is. Which do you prefer?
To illustrate deviation According to the sun’s laws of gravity, the weight of its Oumuamua orbit must evaporate about one-tenth of its mass.Any nitrogen evaporation I will change Oumuamua’s rotation period, its oscillation amplitude will exceed the observed limit. In addition, unlike Oumuamua, the nitrogen iceberg will inherit the motion of the star of its origin. It started from the local rest system.
The farthest range of the Oort Cloud is not protected by interstellar particle bombardment. The density of the solar wind used as a shield decreases inversely proportional to the square of the distance from the sun, and the interstellar medium slows the wind at a distance of 100 AU.
That boundary is called Heliopausa, It is a thousand times smaller than Oort Cloud.in Recent articles In the book I co-authored with Merav Opher, James Drake, and Gabor Toth, we show that the shape of menopause resembles a puffed, nearly round croissant. Outside of it, objects in the Oort cloud are exposed to the same environment as interstellar objects, and their surfaces are not protected by the impact of high-energy cosmic rays, dust, or interstellar gas particles.
How is the outer layer of the Oort Cloud formed?One possibility is that we are Recent articles Myself and my student Amir Siraj. There, we demonstrated that the Sun’s temporary twins in its original star cluster may have captured many of the observed objects in the outer Oort cloud surrounding the cluster. This process can also explain the existence of distant planets, such as the hypothetical planet Nine.
However, a more surprising discovery is that most objects in the Oort cloud may not be connected to the sun. Another project The article we wrote with Amir shows that the recently discovered interstellar comet 2I/Borisov probably originated from another star’s Oort Cloud, which implies the ratio of interstellar objects in the Oort Cloud There are many celestial bodies in the solar system. In other words, objects in the Oort cloud bound to the sun seem to navigate a sea of interstellar objects moving back and forth. In addition, the discovery of 2I/Borisov means that almost 1% of all carbon and oxygen in the Milky Way may be trapped in interstellar objects.
Interstellar objects can be anything, from dust particles to planets itself.For more than a century, we have known that there is cosmic dust in the interstellar space, which adds to the dust of the solar system, which is known for the reflected sunlight and is Zodiac. recent, Optical Gravitational Lens Experiment (OGLE) what Find some planet The effect of interstellar gravitational lensing on the brightness of background stars.
In short, it seems that the galaxy is chaotic. Some are with their star systems, but most are floating in interstellar space. As we study these objects across the solar system, we don’t have to visit them in their place of origin, because we will have to take a long journey. Using our current chemical rocket, it would take 1% of the Earth’s age to reach the center of the Earth’s galaxy.
The strangest thing is that the number of newly discovered interstellar objects allows search for The “plastic bottles” in all the rocks that reach the edge of the solar system. These bottles can carry important information about other civilizations.
As argued Emmanuel Kant Sue Critique of Pure Reason«If any form of experience can prove the existence of creatures that exist in at least some of the planets we observe, I would offend almost all risks. Then, I said, I not only believe that someone lives in other worlds, but I firmly believe in this. This is the certainty that I can affirm the many privileges in my life.
About the author
Avi Loeb served as the Dean of the Department of Astronomy at Harvard University (2011-2020). He was the founding director of the Harvard Black Hole Initiative and the director of the Institute of Theory and Computing at the Harvard-Smithsonian Center for Astrophysics. He has also served as the chair of the National Academy of Sciences’ Physics and Astronomy Committee and the Groundbreaking Starshot Project Advisory Board, and is a member of the President’s Advisory Board of Science and Technology. he is” Aliens: Human beings are the first sign of intelligent life outside the earth, Released by Planeta in February 2021.