The search for extraterrestrial life brings us right back to where we started, planet Earth, at least for a moment. NASA researchers have discovered evidence that some building blocks of DNA, the molecule that holds the genetic instructions for life, were likely created in space and then brought to Earth by meteorites, leaving behind a “kit of ready-made parts” that contributed to the origin of life. All of this gets spelled out by Dr. Michael Callahan in this video released last week by NASA’s Goddard Space Flight Center.

If you still find yourself doubting our extraterrestrial origins, then chew on this more basic fact underscored by physicist Lawrence Krauss. We are all stardust. Put simply, every little atom in our bodies comes from a supernova, an exploding star…

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