A giant supermassive black hole (SMBH) that consumes the mass of the Sun a day has been found to be about one-fifteenth of ...

The mass of the entire universe can also be estimated by measuring how the expansion rate has changed since the Big Bang. Normal matter and dark matter have acted to decelerate cosmic expansion, while ...

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

The universe exists because matter and antimatter are not good friends. Is there a scientific reason why the universe exists?

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 ...

Everything we see around us, from the ground beneath our feet to the most remote galaxies, is made of matter. For scientists, that has long posed a problem: According to physicists’ best current ...

Some things we see in space appear to outpace light. Now we are learning to harness these bizarre optical illusions to ...

Most cosmologists believe that these stars were the first large, free-floating structures to illuminate our universe, and ...

A team of scientists has proposed a groundbreaking new theory on the Universe's origins, offering a fresh, radical take on the Big Bang's early moments. Unlike the widely accepted inflationary model, ...

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 ...