::NASA Finds New Life.

NASA has discovered a new life form—called GFAJ-1—that doesn't share the biological building blocks of anything currently living in planet Earth. It's capable of using arsenic to build its DNA, RNA, proteins, and cell membranes. This changes everything. Updated.

NASA is saying that this is "life as we do not know it". The reason is that 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, share the same life stream. Our DNA blocks are all the same.

In a surprising discovery, NASA scientist Felisa Wolfe Simon and her team have found a bacteria whose DNA is completely alien to what we know today. Instead of using phosphorus, the newly discovered microorganism—called GFAJ-1 and found in Mono Lake, California—uses the poisonous arsenic for its building blocks.

The new life forms up close, at five micrometers.

According to Wolfe Simon, they knew that "some microbes can breathe arsenic, but what we've found is a microbe doing something new—building parts of itself out of arsenic." The implications of this discovery are enormous to our understanding of life itself and the possibility of finding organisms in other planets that don't have to be like planet Earth. Like NASA's Ed Weiler says: "The definition of life has just expanded."

Even closer, showing their internal structure.

Talking at the NASA conference, Wolfe Simon said that the important thing here is that this breaks our ideas on how life can be created and grow, pointing out that scientists will now be looking for new types of organisms and metabolism that not only uses arsenic, but other elements as well. She says that she's working on a few possibilities herself.

NASA's geobiologist Pamela Conrad thinks that the discovery is huge and "phenomenal," comparing it to the Star Trek episode in which the Enterprise crew finds Horta, a silicon-based alien life form that can't be detected with tricorders because it wasn't carbon-based. It's like saying that we may be looking for new life in the wrong places with the wrong methods. Indeed, NASA tweeted that this discovery "will change how we search for life elsewhere in the Universe."

This is a big find as there are trillions of stars with planets that may or may not harbor alien life. Now its just a matter of time.

Further Reading and Information Courtesy: My Brain, NASA.

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