These discoveries will help theorists to re-examine the various routes and conditions under which molecular hydrogen and other molecules are formed in interstellar space. The debate on whether the globules are of biological or chemical origin continues. These findings have excited the astrobiology community. In his laboratory, Allamandola exposes ice laced with small quantities of these building blocks to ultraviolet radiation and cosmic rays, then warms them. The process essentially mimics the fate of comets that spend their lives roaming the vastness of space before crashing into moons or planets.
Nature evolves by keeping ideas that work.
One example we see all around us is bilateral symmetry. First observed in the flatworm, it is the most recognizable feature of humans. Two things happen. The second, and more surprising, development is that some of these organic compounds begin to self-organize. They create membranelike walls around tiny structures that resemble cells.