Yes and there are two types of panspermia. The first type is incidental: we've already encountered meteorites from Mars and the Moon, for example, so it's not

Yes and there are two types of panspermia. The first type is incidental: we've already encountered meteorites from Mars and the Moon, for example, so it's not hard to imagine life bearing material arriving that way. The second would be intentional: either ET seeds planets or merely visits them with contaminated boots or probes. Either way, we would pick up some DNA from offworld.