Astronomers Stumble Upon a Cosmic Fossil from the Dawn of Time

Astronomers have discovered a mysterious, ancient object in our galaxy. NASA calls it "Cloud 9." The object is a vast, wandering cloud of pure hydrogen gas. Scientists say it is a rare relic, a leftover fragment from the universe's earliest days. This discovery provides a direct, untouched sample of the primitive material that formed after the Big Bang. Most ancient gas in the Milky Way has long since been recycled into stars. Cloud 9 offers a new window into the conditions of the infant universe. Researchers will now study it to understand how the first galaxies began to form.