UFOs, Aliens Are Real: Extraterrestrial Beings Have Been Documented Visiting Earth, High-Level Officials and Scientists Claim

 https://www.sciencetimes.com/articles/45775/20230904/ufos-aliens-real-extraterrestrial-beings-documented-visiting-earth-high-level.htm

The theory of Panspermia is very interesting.

https://en.wikipedia.org/wiki/Directed_panspermia

What if the earth is like someone's laboratory, farm or garden?

That might be the case on some other worlds as well.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2845199/