Despite the hypothesis of Avi Loeb, who suggests in his book “Alien: The First Sign of Intelligent Life Beyond Earth”, published in January, that Oumuamua was an alien probe, the mystery remains for this thing observing in the distant solar system will be in 2017.
The object was also moving at very high speeds (over 315,000 km / h) in a trajectory that suggests it came from another star system. But what was it really about?
A new theory
Scientists are currently hard at work hoping to find more concrete explanations, and a team has just published two articles that provide a new theory. Oumuamua was brought to the public’s attention in an American Geophysical Union journal, arguing that Oumuamua was not an alien ship, but a shard from a small planet belonging to another star system.
“We have probably solved the Oumuamua mystery. We can reasonably identify it as part of an “exo-Pluto,” a Pluto-like planet in another solar system, “said Steven Desch, an astrophysicist at Arizona State University and co-author of the study.
The result of a collision?
Research by Desch and colleagues indicated that Oumuamua was likely the result of a space object colliding with its home planet. The collision in question is believed to have occurred about 500 million years ago. The object would then have been projected into our solar system.
The result of a collision? Photo credit: Shutterstock / Dotted Yeti
The researchers believe that it is a frozen block of nitrogen, the composition of which is more or less identical to that of the surface of Pluto and Triton. The team also discovered that Oumuamua entered our solar system in 1995. However, as he neared the sun, his frozen body evaporated. For this reason, the study suggests that by the time it was discovered in 2017, the object had already lost 95% of its mass.
Neither an alien ship, nor a comet, nor an asteroid
Due to the particularly high speed, the scientists only had a few weeks to observe Oumuamua. In addition to its position far from Earth, the celestial body was only about 34 meters wide and about 400 meters long.
All of this made it difficult to determine its true nature. For the authors of this new study, therefore, the object was neither a spaceship nor a comet. In fact, there was no trace of gas, as comets usually do. Its speed, trajectory, and rotation could not be explained by gravity alone, suggesting that it was not an asteroid either. It remains to be seen whether some will still insist on the alien probe thesis!