Considering the size of the universe we live in I think it's reasonable to assume we humans aren't the only intelligent life in existence; in fact, I'm not even sure we qualify as intelligent life. And I don't know if other species' have visited our insignificant little spec of a planet, or why they would. But I think both are possible.
Agreed. But reasonable counter-arguments are also out there.
- If intelligent life is out there, why hasn't SETI picked up a signal yet? (SETI would respond that they have looked at the equivalent of one swimming pool's worth of water from the equivalent of the Pacific Ocean.)
- Life may be out there, but traveling across such vast distances is not possible according to our current understanding of how the laws of the universe work. Or, at least, it would take far too much time to be practical. (There are several rebuttals out there, but they are very speculative.)
Second “Interstellar Visitor,” After Oumuamua, On Its Way To Our Sun.
Thanks for posting. Only the second time in human history that we have knowingly seen such a thing. Amazing. I'll be keeping an eye on this story. Seems to be an asteroid, but I'm sure they will get a lot of interesting data from it.
Here's a frightening story: Apparently we survived a very near miss this summer. 40K miles is nothing! Missed earth by a hair's breadth. They say it was the largest space rock to come so close to earth in a century. Scary when one imagines the damage that could have been.
Ladies and Gentlemen, Until we learn more, "To Infinity and Beyond!"