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 — ...

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

In a glimpse of the early universe, astronomers have observed a galaxy as it appeared just 800 million years after the Big ...

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

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

A new NASA space observatory is scheduled to launch into orbit this week on a lofty mission to map more than 450 million galaxies. The SPHEREx mission (short for Spectro-Photometer for the History of ...

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

The James Webb Space Telescope has revolutionized astronomy in just two years of operations, but how can it see a galaxy 33.8 billion light-years away in a universe that is only 13.8 billion years old ...

Update: NASA is now targeting a launch for Friday, March 7. Find the latest information on the mission here. How did the universe begin? How do planets form and galaxies develop? Could life exist ...

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 ...