James Webb Telescope Unveils 800,000 Galaxies in Historic Cosmic Map
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📰 The quick summary: The James Webb Space Telescope has created the largest and most detailed map of the universe ever produced, revealing more than 800,000 galaxies outside the Milky Way and providing unprecedented insights into the early universe.
📈 One key stat: Over 800,000 galaxies were discovered in a single dataset, covering almost 98% of the universe’s history and looking back 13.5 billion years.
💬 One key quote: “We’re also seeing supermassive black holes that aren’t even visible with Hubble. And they’re not just seeing more, they’re seeing different types of galaxies and black holes,” Professor Casey explained.
1️⃣ The big picture: Scientists have achieved a historic breakthrough using the James Webb Space Telescope to scan the COSMOS field, a remote region of space free from nearby stars or interfering gases. After 255 continuous hours of observation, they created COSMOS-Web, the largest and most detailed map of the universe ever produced. This groundbreaking dataset has revealed more than 800,000 galaxies outside our Milky Way, offering a glimpse back to when the universe was just 300 million years old. The density of galaxies discovered was ten times higher than expected in the universe’s first 500 million years, challenging existing theories about cosmic evolution.
2️⃣ Why is this good news: The discovery provides unprecedented insights into the early formation and evolution of galaxies, helping astronomers address fundamental questions about how the universe developed. The detailed imaging captured supermassive black holes previously invisible to other telescopes like Hubble, revealing not just more celestial objects but entirely different types of galaxies and cosmic structures. All data from the COSMOS-Web project has been made publicly available after two years of processing, democratizing access to this valuable information. This open approach allows undergraduate students and independent researchers to explore the early universe alongside established scientists, fostering broader participation in astronomical research.
3️⃣ What’s next: Scientists will analyze the density of galaxies found in the universe’s first 500 million years to understand why it exceeded expectations by tenfold. Research teams worldwide can now access and study the complete COSMOS-Web dataset to make their own discoveries. Future observations may target other regions of space to validate these findings and expand our understanding of cosmic history.
Read the full story here: Ecoticias – More than 800,000 galaxies in the darkness ― James Webb announces historic discovery out of Milky Way
