Apr 6
🌌🔭 The early universe was full of hydrogen — and now we finally have the proof. The HETDEX survey has just multiplied the known count of hydrogen gas halos from roughly 3,000 to over 33,000, surrounding galaxies that existed 10 to 12 billion years ago during Cosmic Noon, the most intense star-forming epoch in cosmic history. These Lyman-alpha nebulae are the fuel reservoirs that fed the explosive growth of the first galaxies — and we've barely scratched the surface of what this new census will reveal. Read the full story at SKYCR.ORG. ✨📡
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