Is the universe infinite? It's one of the most profound questions we can ask, and here's the short answer: We don't know. While we have learned a great deal about the universe, a portion of the cosmos ...

After a century of observations spanning the breadth of the cosmos and theoretical insights that push humanity's vision of the universe to its utmost limits, we can finally, confidently say that the ...

A century ago, Edwin Hubble began the race to the edge of the cosmos Damond Benningfield In 1930, Albert Einstein met with astronomers (including Edwin Hubble, at Einstein's left, back row) at Mount ...

The universe is expanding, and while that fact is fascinating, it also creates a question that trips people up: if it’s growing, what exactly is it expanding into? Our brains are used to picturing ...

Long before starlight filled the cosmos for the first time, the young universe may have been simmering, according to a new study. The findings suggest that about 800 million years after the Big Bang, ...