In January 2025, NASA opened the samples from the asteroid Bennu, returned to Earth after a seven-year journey. We are talking about it now because the definitive analysis—slow, careful, and stripped of premature hype—has confirmed the presence of two sugars familiar to our biochemistry: ribose and glucose.
These aren’t signs of life, but something more fundamental: key ingredients of our chemistry that existed before Earth itself. It is a seemingly trivial detail, yet one sufficient to crack the hardest of our mental habits: imagining ourselves at the center of the story.
Chemistry That Precedes Life
This discovery doesn’t open the door to sci-fi scenarios, nor does it imply that life originated elsewhere. It says something more sober and profound: the chemistry capable of igniting life does not belong solely to our planet, but to the natural repertoire of the cosmos.
Ribose is a fragile sugar, destined to deteriorate easily. Finding it in a primordial residue strengthens the evidence. In the RNA world hypothesis, it represents a potential starting point: molecules capable of storing information and facilitating reactions. Not organisms, but a metabolic rough draft.
Thus, the origin of life