Our understanding of cosmology hinges on how well we know our own local universe, which remains poorly mapped and poorly ...

Near-infrared images from the James Webb Space Telescope revealed five early universe galaxies merging within a large halo.

Astronomers have uncovered one of the earliest and most complex galaxy mergers ever observed — a system involving at least five physically interacting galaxies, spotted just 800 million years after ...

New computer simulations suggest the first magnetic fields that emerged after the Big Bang were much weaker than expected — ...

Quirks & Quarks is having its 50th anniversary this fall. Bob McDonald shares his appreciation for the people behind the ...

The first chemical reactions in the wake of the Big Bang have been recreated for the first time in conditions similar to those in the baby Universe.

DESI observations suggest black holes may generate dark energy by consuming stellar matter. The idea resolves puzzles about ...

For decades scientists believed the universe was built on ordinary matter, dark matter and dark energy. These unseen forces ...

That cosmologists cannot agree on one of the most elementary facts about the universe is striking enough. But that uncertainty produces others, too: it makes it impossible to calculate an exact age ...

Just as ocean waves shape our shores, ripples in space-time may have once set the Universe on an evolutionary path that led to the cosmos as we see it today.

— Live Science crossword puzzle #3: Mathematical term for a whole number — 5 down ...