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

What is the biggest object in the universe? Learn more about the biggest objects in the universe, including galaxies, galaxy ...

If there is an absolute law in the universe, it’s that nothing can travel faster than the speed of light. Space is big, and ...

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 universe may not expand forever as scientists once believed. According to new calculations by Cornell physicist Henry Tye, the cosmos is approaching the midpoint of its 33-billion-year life and ...

Astronomers have taken a rare look into the distant past of the universe and uncovered evidence that galaxies and their ...

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

Astronomers hunting for evidence of the light from the first stars and galaxies have found that the universe was warm, rather than cold, before it "lit up." ...

Mathematical quirks of our universe have led some cosmologists to wonder whether the cosmos was actually born in a black hole.