Latest about expert voices paul sutter
Is there really a 'crisis' in cosmology?
You may have heard about the "cosmology crisis:" Different methods of measuring the age of the universe are giving different results, and cosmologists have no idea why.
What happens at the center of a black hole?
At the center of a black hole, matter is compressed down to an infinitely tiny point, and all conceptions of time and space completely break down.
What is a star?
It's easy enough to say what a star is: one of those bright pointy things that twinkle in the night sky. But the actual definition of a star is as rich and colorful as the stars themselves.
Will we ever know the true nature of 'Oumuamua, the first interstellar visitor?
Astronomers have proposed lots of ideas to explain 'Oumuamua's odd characteristics, and we're unlikely ever to find out which one is correct.
The mystery deepens: Ghostly neutrinos and fast radio bursts don't come from the same place
Knowing if high-energy neutrinos and FRBs came from the same place on the sky would help explain the origins of both. But alas, they do not.
Massive simulation of the universe probes mystery of ghostly neutrinos
How do you test theories of the universe? By building gigantic supercomputers and simulating the evolution of the cosmos.
Do we live in a simulation? The problem with this mind-bending hypothesis.
Does the simulation hypothesis offer a compelling argument, or is it just interesting food for thought? Let's find out.
