A meteor may have crashed into Mars's ocean.
Well, if it had an ocean. They're still not sure about that. But if it did:
On a world believed to have lacked Earthlike plate tectonics, any tsunamis were probably triggered by a meteor slamming into a huge body of water.
Mostly, there seems to be a lot of nothing going on other planets, but once in a great while, something like that happens. Also, someday, maybe this:
There is a roughly 1-in-100,000 chance that the Earth might be ejected into interstellar space by a stellar encounter before this point, and a 1-in-3-million chance that it will then be captured by another star. Were this to happen, life, assuming it survived the interstellar journey, could potentially continue for far longer.
From the beloved Timeline of the Far Future