How does a black hole generate a magnetic field and how can it be measured and visualized? Alan CroftSeattle, Washington As black holes feed, they pull material into a disk around them. The material ...

The new miniaturized structure requires a few thousand times less power than larger magnets and it could help bring ...

Primordial magnetic fields may help explain why measurements of the universe’s expansion do not agree. Scientists have long known that the universe is expanding, yet there is still no agreement on how ...