about 3I/Atlas and other similar topics. The AI posters on YouTube and other sites are going nuts over this, and competing to produce the most scary, unlikely things as truth.
Bottom line is this: 3I/Atlas is a comet that is coming into the solar system from outside of the solar system. Very rare. Due to that, we don't know as much about its composition, etc. as we do about local comets. In fact, we know very little, actually, about this one. It's exhibiting some characteristics that differ from normal comets.
But, it's millions or billions of years old. It's not some creation of an advanced society. It's a big-ass rock flying through the sky. It's not goinig to hit Mars or Earth. It's going to fly away again, probably never to be seen again.
Are there others like it? Sure. But none of them are on their way to our solar system right now. We're looking for them, see. Just like we found 3I/Atlas. When they show up we'll spot them and the speculation can begin again.
Don't worry. We're more likely to poison our environment and go extinct that be taken out by some interstellar rock.