Science

Leviathan's sprawling stars challenge idea that dusty giants become compact galaxies

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Briefings

Astronomers using the James Webb Space Telescope confirmed a massive, dust-rich galaxy named Leviathan in the early universe, appearing when the cosmos was roughly 1.5 billion years old. The galaxy's stars are spread out rather than concentrated, challenging the idea that dusty giants evolve into compact galaxies. This discovery was published in a paper posted to the arXiv preprint server on October 19.

Key points

• The James Webb Space Telescope (JWST) confirmed a massive, dust-rich galaxy called Leviathan in the early universe.
• The galaxy appeared when the cosmos was roughly 1.5 billion years old, showing stars spread out rather than concentrated.

Context

This finding challenges the prevailing cosmological model that dusty, massive galaxies evolve into compact, star-forming galaxies. The discovery provides a rare snapshot of a galaxy in its early, star-poor phase.

Limitations

The evidence is limited to a single preprint on arXiv. No peer-reviewed journal publication or observational data from other telescopes are provided. The specific stellar distribution details remain unverified without further analysis.

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