A galaxy spotted by the James Webb Space Telescope, known as Hebe, that existed just 400 million years after the big bang ...
Found in an ultrafaint dwarf galaxy, the ancient star’s unusual chemistry indicates it formed from gas enriched by a single ...
It wasn't until the first stars began to shine that space turned transparent and light flowed. It's a curious thing, but not ...
A new study has found that a hidden bias in galaxy models can skew gravitational-wave measurements of how fast the universe is expanding. That finding complicates one of astronomy’s most promising ...
A developing galaxy cluster dating to about 1 billion years after the Big Bang is shown in this handout image released on January 28, 2026. The white box marks the field of view of the Chandra X-ray ...
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