There are several candidates for the biggest star in the universe. One of them, VY Canis Majoris, is over 1,500 times the ...

For decades, astronomers have wondered what the very first stars in the universe were like. These stars formed new chemical ...

Understanding the early universe is a foundational goal in space science. We're driven to understand nature and how it evolved from a super-heated plasma after the Big Bang to the structured ...

A radio signal from the dawn of time could help scientists weigh the first stars and reveal how they lifted the cosmic darkness.

“These insights are derived from simulations that integrate the primordial conditions of the universe, such as the hydrogen-helium composition produced by the Big Bang.” In developing their ...

A Universe Shaped by First Stars About 380,000 years after the Big Bang, the universe was a smooth, uniform expanse consisting mainly of hydrogen and helium gas.

New research suggests that primordial black holes could have played an important role in the formation of the universe's first stars, but did they help or hinder?

A monster galaxy from the early universe shows that the cosmos was rich with oxygen when it was only less than 3% of its ...

This image is from a ground-breaking simulation of the universe's primordial gas clouds. The universe's very first stars formed in these clouds. The color scale shows gas density.