James Webb data reveal pristine gas irradiated by energetic light some 450 million years after the Big Bang — a sign it may ...
A faint glow of helium, hanging near one of the earliest known galaxies, may be the clearest sign yet that astronomers have finally caught the universe’s first stars in action. The signal comes from a ...
For decades, astronomers were only able to study the universe's very first stars using theoretical models. Now, observations from the James Webb Space Telescope (JWST) have revealed what may be the ...
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