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 ultimately true, the universe will reach its maximum size around 11 billion years from now. At that point, physics (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 first thing we know about the universe is that it’s really, really big,” says cosmologist Michael Turner, who has been contemplating this reality for more than four decades now. “And because the ...

For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of light is incredibly fast to us ...

Massive stars do not live long. There are several candidates for the biggest star in the universe. One of them, VY Canis Majoris, is over 1,500 times the width of the sun. If it were placed in our ...

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