Why did they form at that time? Astronomers know from observing distant exploding stars that the size of the universe has ...

Stars form in the universe from massive clouds of gas. European Southern Observatory, CC BY-SA For decades, astronomers have wondered what the very first stars in the universe were like. These stars ...

Immediately after the Big Bang, which occurred around 13.8 billion years ago, the universe was dominated by unimaginably high temperatures and densities. However, after just a few seconds, it had ...

The very first generation of stars, called Population III stars, are mostly expected to be too distant to see directly – but ...

(THE CONVERSATION) If you happen to find yourself in the Southern Hemisphere with binoculars and a good view of the night sky on a dark and clear summer night, you might just be able to spot the ...

Astronomers may have uncovered the origins of the mysterious “little red dots,” some of the strangest galaxies seen in the early universe. These tiny but brilliant objects, discovered by the James ...

For decades, astronomers have wondered what the very first stars in the universe were like. These stars formed new chemical elements, which enriched the universe and allowed the next generations of ...

Luke Keller does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. For decades, astronomers have wondered what the very ...

Chemistry in the first 50 million to 100 million years after the Big Bang may have been more active than we expected. This article was originally published at The Conversation. The publication ...