The OSIRIS-REx sample return capsule reached 2,900°C (5,300°F) as it used the atmosphere to slow down – before some people on the internet were already questioning whether it might have brought alien pathogens with it.
The answer to that is a big fat no.
Because Bennu is such a tiny rock.
It has no nutrients, no atmosphere, and no water.
It is showered by ultraviolet light, known for its ability to destroy biological tissue.
There are plenty of scenarios – such as the panspermia hypothesis – that hypothesize life travels to the cosmos via asteroids, meteors, and comets.
And maybe it does, but it’s not sunbathing