Primordial black holes might be an explanation for dark matter — the invisible substance that accounts for most of the matter in the universe — but so far, searches for them have turned up empty.

Observed by NASA's James Webb Space Telescope, the galaxy—designated JADES-GS-z14-0—is unexpectedly bright and chemically complex for an object from this primordial era, the researchers said.

Observed by NASA's James Webb Space Telescope, the galaxy -- designated JADES-GS-z14-0 -- is unexpectedly bright and chemically complex for an object from this primordial era, the researchers said.

The early universe could have given birth to primordial black holes. If rare regions had an enhanced mass density such that their self-gravity reversed cosmic expansion on the scale of the cosmic ...

Primordial helium from the beginning of the solar system may be stuck inside Earth's solid core, new research suggests. The findings could have implications for a long-standing debate about how ...