Experiments related to spontaneous generation timeline

Francesco Redi was an Italian physician and poet.
He tested whether maggots appeared on meat because of spontaneous generation. He covered some jars of meat and left others uncovered to see if flies would lay eggs on the exposed meat. As the maggots appeared only in the uncovered jar where flies could lay eggs, the conclusions were that maggots only appeared on the uncovered meat, proving that flies caused the maggots, not spontaneous generation.

John Needham was an English clergyman.
He heated broth to kill microorganisms, sealed it in flasks, and found microorganisms growing inside. The results he obtained were that microorganisms appeared in the sealed broth.
And he argued this showed spontaneous generation occurred because life appeared in the sealed flasks. However, the experiment had flaws, such as not boiling the broth long enough to kill all microbes.

Lazzaro Spallanzani was an Italian priest and biologist.
He sealed flasks before boiling broth and boiled them for a longer time than Needham. He found no life inside the sealed flasks, but microorganisms grew when he unsealed them. The results were that no microorganisms grew unless the flasks were unsealed.
He argued that spontaneous generation was false and that life came from contamination in the air.

Louis Pasteur was a French scientist and pioneer in microbiology.
He used special S-shaped neck flasks to boil broth. The shape of the flask allowed air in, but trapped particles. When the flasks were sealed no life appeared. But when tilted, life appeared in the broth. The results were that no microorganisms grew until the flask was tilted or the neck was broken, letting particles reach the broth. Pasteur proved life comes from other life, disproving spontaneous generation.