they live several hours at absolute zero ( or the closest humanly possible to do)
Having an organism that can survive absolute zero is really unrealistic.
this way , even gas giants may have life , which then usually evolves
not really, cold planets are not a problem , since the possuna temperature is -40C and possunians are not affected by the cold, living between absolute zero and 40C , hot planets can be cooled by the seed , which has a computer capable of detecting soil temperature and atmosphere and to evaluate the next step , or hibernating enable organisms kept in hyper sleep
Not really, the ship makes larger organisms based off of the first ones. This method also works on more planets, because you would have to use yours on a perfect planet for that specific species, so you wouldn't be able to spread it that much.
our way is faster, takes hundreds of years, its mode takes billions
The UW has a project that spreads life, and we've been using it for a while. A small ship lands on a planet, analyzes its chemistry and creates life perfectly suited to the planet. It starts with microscopic organisms, and then progresses to larger life forms based on the planet's chemistry.