If ultimately true, the universe will reach its maximum size around 11 billion years from now. At that point, physics (and ...

The known universe is full of shockingly huge things. Here are the largest planets, stars, galaxies, and structures we've ...

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 ...

The biggest explosion seen in the universe has been found. This record-breaking, gargantuan eruption came from a black hole in a distant galaxy cluster hundreds of millions of light years away.

Primordial black holes are hypothetical black holes thought to have formed moments after the Big Bang. Because they supposedly formed about 14 billion years ago, and black holes are thought to ...

Modern cosmology reveals a universe expanding uniformly without a spatial center or edge. The Big Bang wasn't a localized ...

The universe is approaching the midpoint of its 33-billion-year lifespan, a Cornell physicist calculates with new data from ...

We’ve grown up with the idea that the universe will expand forever, meaning the "cosmological constant" is positive. What if ...