One new research says that Oumuamua was a natural object, and another research says that it was not a natural object.

The thing is this: don't be so serious. A story about the Oumumua or asteroid from another solar system as an alien spacecraft is a hypothesis. The model of the alien or human futuristic SETI probe is that the craft would be covered by ice. In some versions or theoretical models, alien probes are miniature robots or probe-swarm.  

The size of those robot probes is not very big and they form a swarm of independently operating probes. Those probe swarms are the cosmic version of drone swarms. And because those probes are acting as an entirety that guarantees their survivability in an extremely long journey. 

Those systems are closed in cosmic ice bite. Then the senders of that probe will send it through the most promising solar systems. When that ice melts it releases that intelligent dust. That ice core cover's its origin. The probe comes to the targeted solar system by using passive systems. And the communication will not uncover the probe. The model for that is taken from nuclear submarines. 

"This artist’s impression shows the first interstellar object discovered in the Solar System, 1I/’Oumuamua, discovered in 2017. The wayward object swung within 24 million miles of the Sun before racing out of the solar system. Credit: ESA/Hubble, NASA, ESO, M. Kornmesser" (ScitechDaily.com/Cracking the ’Oumuamua Code: Alien Spaceship or Natural Phenomenon?)

Those submarines patrolling using hydrophones and other passive systems will not uncover the submarine. So this is why the Oumumua fits this profile. But there is the possibility that the hydrogen that melted and vaporized from the surface of that asteroid made it act as it acted. The problem is that the vaporization happens at the side of the Oumuamua that is turned to the sun. 

That means particles that come from the sun are releasing the hydrogen that is in the direction where that asteroid is traveling. And that means the hydrogen should act like a breaking rocket. If the hydrogen layer was not homogenous, hydrogen release happens locally. And that thing changes the route of the asteroid. So that supports the model where Oumumua is the natural object. 

The fact is that there is the possibility that hydrogen ice that vaporized from Oumuamua's surface could change the trajectory of that object. Another thing is that the Oumumua arrived in our solar system at the angle that the sunlight strikes it diagonally. And that thing means that Oumumua is natural. Or was it an alien probe? The answer is that nobody ever walked on Oumumua's surface. 

And there are no samples from that interstellar asteroid, so we can say that Oumumua was an object that could be alien spacecraft covered by ice. The fact is that surely nobody knows the answer. So the case of Oumumua causes more discussions about its origin in the future. 

https://scitechdaily.com/cracking-the-oumuamua-code-alien-spaceship-or-natural-phenomenon/