We know how the universe began. An event we call the Big Bang started it all about 13.8 billion years ago. How the universe ...

A faint radio "whisper" from ancient hydrogen reveals the universe was heating up long before it filled with starlight.

When discussing the scale of the universe, we’re immediately faced with an intriguing question: are we tiny beings, or is the ...

Astrophysicists have presumed for nearly a century that the universe will just keep expanding for all eternity, driven by an ...

If the universe is expanding, then what is it expanding into, and what is it expanding from? Where's the edge of the universe ...

If recent discoveries that dark energy is evolving hold any water, our Universe will collapse under its own gravity on a ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Our vast universe might not be infinitely expanding after all. Some ...

Scientists have found a remarkably small yet bright object from the early universe that doesn’t make sense in our existing models of how stars and galaxies formed, even our own Milky Way. That means ...

Earth and the surrounding Milky Way galaxy may be sitting inside a cosmic void—a "mysterious giant hole"—that could be speeding up the universe's expansion in our region compared to others, This is ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

We all need some space sometimes—but it's harder to find than you might think. How far into our universe do we have to go to ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. About a century ago, scientists were struggling to ...