Yes, sure. And scientists have just discovered a life form based on arsenic.
At its conference today, NASA scientist Felisa Wolfe-Simon will announce that NASA has found a bacteria whose DNA is completely alien to what we know today. Instead of using phosphorus, the bacteria uses arsenic. All life on Earth is made of six components: carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur. Every being, from the smallest amoeba to the largest whale, shares the same life stream. Our DNA blocks are all the same.
But not this one. This one is completely different. Discovered in poisonous Mono Lake, California, this bacteria is made of arsenic, something that was thought to be completely impossible. While Wolfe-Simon and other scientists theorized that this could be possible, this is the first discovery. The implications of this discovery are enormous to our understanding of life itself and the possibility of finding beings in other planets that don’t have to be like planet Earth.
So, which was more likely? Updates soon to follow.