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Dwarf Galaxies Banished the Darkness and Lit Up the Early Universe

The Universe was dark and opaque until UV energy ionized the hydrogen and made the Universe transparent. Were dwarf galaxies responsible?

Civilizations are probably spreading quickly through the universe, researchers claim

Civilizations are Probably Spreading Quickly Through the Universe

Why The Earliest Galaxies Are Sparking Drama And Controversy Among Astronomers

The James Webb Space Telescope is not only finding galaxies forming 200 to 500 million years after the Big Bang, but also that they are bigger and brighter than astronomers expected.

Early galaxies from soon after the Big Bang cause drama : Short Wave : NPR

We're entering a new era of astrophysics. The James Webb Space Telescope is helping scientists test existing ideas and models of how the universe was created on a whole new level. This telescope is sending back images of galaxies forming under a billion years after the Big Bang way earlier than astronomers had previously expected. Not only that, scientists had anticipated that later but still very early galaxies would be small, barely formed blobs; instead, the galaxies in these images have spiral arms. So, today's show is all about GALACTIC CONTROVERSY! Computational astrophysicist Jorge Moreno talks with fellow astronomer and Short Wave's Scientist in Residence Regina G. Barber about how these new findings are stirring up controversy in the scientific community and the lessons we can learn from galaxies. Questions or controversies? Email us at shortwave@npr.org.