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This creation story begins more than 4.5 billion years ago, when dust and gas from a giant molecular cloud gravitationally collapsed to create a protostar that would become our sun, surrounded by a spinning disk of gas and dust.

And he reiterated that no hydrogen iceberg could survive the trek from the nearest giant molecular cloud.

And more importantly, the trek from the nearest "giant molecular cloud"—a dusty, gassy region of space where hydrogen icebergs are thought to form—is far too long.

The best bet for such a chilly birthplace would appear to be within a giant molecular cloud—accumulations of dust and gas tens to hundreds of light-years wide where star formation takes place.

Over many millions of years, about 1 percent of the material in a typical giant molecular cloud will come together under the force of gravity to form stars.