There are several candidates for the biggest star in the universe. One of them, VY Canis Majoris, is over 1,500 times the ...

What is the biggest star in the universe? The largest known star in the universe is UY Scuti. It has an estimated radius of 1.188 billion kilometers.

The universe's biggest stars are 20 times the size of the Earth's sun and at least five times as hot. They go out with a bang.

But if you zoom out to the far reaches of our galaxy, the sun no longer looks like such a giant. So what are the largest (and the smallest) known stars in the universe?

Space Mysteries: If the universe is 13.8 billion years old, how can a star be more than 14 billion years old?

Atoms may come apart as the Universe’s biggest stars explode Something we found in a particle accelerator could explain massive stars' supernovae.

New research suggests that primordial black holes created during the Big Bang could have played a major role in forming the ...

At an estimated 832,000 light-years across, it is arguably the largest known spiral galaxy, although its tidal arms and distorted shape are likely temporary on cosmic timescales.

A study published this week in an astronomical journal suggests our universe could be 26.7 billion years old, or about twice as old as we thought.

The universe is probably much larger than the portion we can see.

Astronomers have come a long way in understanding how stars form today, but the question of how the universe's first stars formed is an enduring mystery. While the topic remains complex and ...