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Deep Dives · Article

Eyeballs on the Universe: Webb's Early Galaxy Problem Explained

Webb found galaxies in the early universe that shouldn't exist yet. Here's what the 'too many too early' problem means for cosmology.

JWST First Deep Field (SMACS 0723) — ESA/Webb, NASA & CSA

The answer first

The idea that changes the view

Webb found galaxies in the early universe that shouldn't exist yet. Here's what the 'too many too early' problem means for cosmology.

What most explanations leave out

Evidence and named signals

    Familiar viewEyeballs on the Universe: Webb's Early Galaxy Problem Explained
    Hidden mechanismWebb found galaxies in the early universe that shouldn't exist yet. Here's what the 'too many too early' problem means for cosmology.

    What remains uncertain

    Why it matters—or what you can observe

    Webb found galaxies in the early universe that shouldn't exist yet. Here's what the 'too many too early' problem means for cosmology.

    Further reading and primary sources

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