-immediate leak via social media or some scientific forum
-vague press release from group/agency/scientific body responsible for the possible discovery stressing caution and patience until it is examined properly
-months of waiting until the discovery is written up and reviewed
-years of debate, skepticism, counter-explanations, new evidence, etc.
-many decades later, if/when technology is improved and there is money and interest, a more advanced investigation is conducted on behalf of a government or private scientific body
-vague press release from group/agency/scientific body responsible for the possible discovery stressing caution and patience until it is examined properly
-months of waiting until the discovery is written up and reviewed
And then, perhaps, in a riveting scientific journal, released long after we are dead, our descendents may find that we have discovered...alien bacteria.