Cosmology

The First Supernovae Flooded the Early Universe With Water

Cosmology, molecular clouds, Population III stars / By

Water is the essence of life. Every living thing on Earth contains water within it. The Earth is rich with life because it is rich with water. This fundamental connection between water and life is partly due to water’s extraordinary properties, but part of it is due to the fact that water is one of …

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This Quasar Helped End the Dark Ages of the Universe

Cosmic Background Radiation, Cosmology, Dark Ages, quasar, Quasars, Reionization / By

After the Big Bang came the Dark Ages, a period lasting hundreds of millions of years when the universe was largely without light. It ended in the epoch of reionization when neutral hydrogen atoms became charged for the first time and the first generation of stars started to form. The question that has perplexed astronomers …

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