The trailblazing Harvard scientist, who documented the dominance of hydrogen and helium in stars, is still inspiring ...

The effects of a proposed green-energy facility in Chile could be devastating for some of the most powerful instruments ...

"There really is something very different about how these giant planets form versus how small planets like Earth form." ...

New images of the infant universe captured by the Atacama Cosmology Telescope (ACT) are the most precise "baby pictures" to ...

For over a century, astronomers have marveled at the beauty and complexity of spiral galaxies, which feature arms covered in ...

When we observe distant celestial objects, there is a possible catch: Is that star I am observing really as reddish as it ...

New research by the Atacama Cosmology Telescope (ACT) collaboration has produced the clearest images yet of the universe's ...

Chile's Atacama desert is the driest non-polar region on Earth, where "the sky shines when the sun sets", said The Guardian.

The standard model of how the universe works involves the widely accepted theory that dark energy is a fundamental constant ...

Astronomers from the University of Arizona have uncovered astonishing details about a galaxy that existed when the universe ...

New research led by W. M. Keck Observatory Instrument Scientist and astronomer Grant Hill has confirmed what scientists have long suspected—WR 104 comprises two massive stars: a Wolf-Rayet star and an ...

Primordial supernovae got the ball rolling a quick hundred million years or so after the start of the universe.