The final milestone in construction was reached on November 25, as technicians carefully joined the giant telescope's inner ...

If not in visible stars and galaxies, the most likely hiding place for the matter is in the dark space between galaxies.

"Precision in these measurements is critical, as even subtle discrepancies could signal deviations from the model — ...

Until recently, Type Ia supernovae have been treated by cosmologists as the gold standard of cosmic distance determination: quite uniform “standard candles” whose peak brightness was reliable over all ...

The filament of matter stretches 50 million light-years, and contains a row of galaxies 5.5 million light-years long that are ...

Cosmic dawn galaxies seen by JWST reveal hidden clues about dark matter and keep rival theories about its true nature alive.

For centuries, Europeans thought that eternal daylight saturated the cosmos. The shift to a dark universe has had a profound ...

SQUIRE aims to detect exotic spin-dependent interactions using quantum sensors deployed in space, where speed and ...

The universe — everything in existence — is expanding every second! It's only been about a hundred years that humanity has known this, too — that most galaxies are traveling away from us and the ...

A radical new theory begins with a central claim: consciousness is the fundamental field of reality; time, space, and matter ...

If we could farm in space, astronauts would have fresh, familiar foods. Those plants could recycle air and water. Plus, it feels good to be around plants. Once more people – and maybe even cats – can ...