On Christmas Day 2021, alongside other astronomers, I watched the James Webb Space Telescope (JWST) launch from French Guiana and begin its month-long journey to its destination, 1.5 million ...

An extremely early Type II supernova explosion, named after the Titan goddess of dawn in Greek mythology, occurred just 1 ...

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Astronomers used the James Webb Space Telescope and gravitational lensing to observe SN Eos, an ordinary supernova from the ...

The first generation of stars that were born in the universe are a mystery. We can estimate when they existed and even how big they might have gotten, but direct evidence has been lacking. Now, JWST ...

Astronomers have discovered a vast, dense cluster of massive galaxies just 1 billion years after the Big Bang, each forming ...

New observations from the James Webb Space Telescope have revealed unexpected features in the early universe, including ...

The James Webb Space Telescope has uncovered traces of colossal, short‑lived stars that blazed out in the universe’s first few hundred million years, leaving behind only their violent signatures.

Three billion years after the Big Bang, a massive galaxy already looked like it had run out of time. It spun in a calm, ...

Astronomers find galaxy Y1, a young star-forming region, revealing extreme heat just 600 million years after the Big Bang.

Simulation studies indicate water formation within the first 200 million years of the universe, primarily through supernovae from the first generation of stars. Pair-instability supernovae, occurring ...