Some things in cosmology may simply be unknowable. Why is there something rather than nothing? What lies outside the universe? What is inside a black hole? That last one has been niggling at ...

Could black holes help explain the origins of high-energy cosmic radiation? The universe is filled with many forms of radiation and particles that can be detected here on Earth. Among them are photons ...

What if the universe’s biggest monsters aren’t as massive as we thought? :milky_way: A groundbreaking new study reveals that supermassive black holes may actually be ten times smaller than scientists ...