The clearest and most precise images yet of the universe’s infancy from the Atacama Cosmology Telescope show the first steps ...

Researchers have taken atomic diffraction to a new level, revealing surprising behaviors in high-energy helium and hydrogen ...

General Fusion says its new fusion reactor will produce more power than it consumes by 2027 — a breakthrough that could ...

Hydrogen nano-clusters at low temperatures ... to possess superfluid characteristics at low temperatures in 1936—helium atoms flowed through extremely narrow channels without friction or viscosity.

“Before the first stars exploded, there was no water in the Universe because there was no oxygen. Only very simple nuclei ...

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

After five years of staring unblinking at the sky, the Atacama Cosmology Telescope (ACT) has compiled the most detailed map ...

The line became known as the main sequence. Competing groups of astronomers came up with different ways to categorize main ...

More stars formed, turning nearly all the opaque, neutral hydrogen atoms into a transparent broth ... they were made almost entirely of hydrogen and helium, with trace amounts of lithium, because ...

“A star is really born when it gets hot enough in the center that you can hit hydrogen atoms together and they make helium,” says Ashley Villar, an astronomer at Harvard University. Stars then mostly ...