How is the total mass of the universe calculated? Bob GiddingsGreen Bay, Wisconsin Calculating the total mass of the universe ...

Scientists ultimately settled on a feeding black hole at the heart of a far-distant galaxy as the most likely engine for 3C ...

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

Of all the celestial bodies, none induce awe and fear in equal measure quite like black holes. They are incredible astrophysical objects and there are plenty of reasons why they are so iconic. In ...

In fact, scientists think that the Big Bang did not happen at a single location in space. It occurred everywhere at once.

If you think a galaxy is big, compare it to the size of the universe: it's just a tiny dot which, together with a huge number ...

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 ...

Black holes are among the most mysterious and powerful phenomena in the Universe, with the largest known example—TON ...