The early universe - Deepstash
The early universe

The early universe

The JWST will be ale to look back around 200 million years after the big bang, when the first stars in the Universe formed.

The first stars are thought to have been massive giants made of hydrogen and helium, whose short lives ended in the supernovae that created the heavier elements we detect in younger stars today. 

To see this period in cosmic history, we need sensitive infrared instruments to detect the faint traces of light that have travelled through space and time to reach us.

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