There is a talk amongst Astrophysics (not a serious one) that we showed up too late as a civilization, and Universes thrived at around 5 billion years after the big bang.
Now we are 13.8 billion years old, and the Earth formed around 4.5 billion years ago.
That 7+ billion year gap is so huge, we cannot even detect any structures anywhere.
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My thoughts out of my @$$
The possibility is the Mars where there is a big scar on it, where it could have had been a space war, but cannot figure out as it's been billions of years ago.
Same for the Saturn. It could have had harboring another life form and try to protect itself with the thick atmospheric shield in the gas giant to avoid the demise the Mars has encountered.
Now we are 13.8 billion years old, and the Earth formed around 4.5 billion years ago.
That 7+ billion year gap is so huge, we cannot even detect any structures anywhere.
---
My thoughts out of my @$$
The possibility is the Mars where there is a big scar on it, where it could have had been a space war, but cannot figure out as it's been billions of years ago.
Same for the Saturn. It could have had harboring another life form and try to protect itself with the thick atmospheric shield in the gas giant to avoid the demise the Mars has encountered.