We do find bacteria inside meteorites,
https://en.m.wikipedia.org/wiki/Allan_Hills_84001
Many of the worm-like objects in ALH84001 are just a few tens of nanometers across, or about a tenth the size of the smallest-known bacteria on Earth. But the minimum amount of molecular “equipment” needed to keep a bacterium alive (including the DNA and ribosomes to translate the genetic code into proteins) would require a volume equal to a 200-nanometer sphere. In other words, these so-called Martian fossils are just too small to have ever been alive.
If that sh*t can be found on a planet outside the goldilocks zone, then it's not a far stretch...