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

How did everything begin? It's a question that humans have pondered for thousands of years. Over the last century or so, science has homed in on an answer: the Big Bang. This describes how the ...

Cosmic inflation tries to describe one brief but crucial phase in the Big Bang that launched the universe onto its expansion course. Credit: Christine Daniloff / MIT / ESA / Hubble / NASA Many ...

It will be a view unlike any other — completely invisible, exceptionally quiet and utterly transformative. Deep in the first moments of the Big Bang, the entire cosmos shook and rumbled. Those quakes ...

Astronomers have discovered the most powerful cosmic explosions since the Big Bang, naming them "extreme nuclear transients." These incredibly energetic explosions occur when stars with masses at ...