Just read a news article about how 3 completely new types of bacteria have been found on the international space station due to it’s isolation, if that’s the case then how did they get there if we have never observed them before? what created them?
In: Biology
The short answer is that new bacteria are appearing all the time because evolution happens on a generational scale. Bacteria reproduce geometrically, which allows them to go through several generations in the span of a few days, rather than a few centuries. Every generation, there will inevitably be a few bacteria with mutations in their genetic code. Enough of these mutations add up over the course of a few thousand generations, and boom – new bacteria. This happens anywhere bacteria are found, and bacteria are found on humans, which means bacteria will be found in the ISS.
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