For decades, a black hole with as much spin or charge as possible, given its mass, was considered mathematically impossible. A new proof reveals otherwise.
September will see the appearance of C/2023 A3, also known as Tsuchinshan–ATLAS, that has traveled for tens of thousands of years through the solar system.
We now know why some blood is missing a key antigen—leading to the creation of a new blood-grouping system. Experts believe even more discoveries are on the way.
Cedric Dark is a gun-owning emergency physician, a father, and the cousin of a man who was shot to death. This is what he—and the science—say needs to change.
Protracted flooding has engulfed the country's Sudd region due to more water entering the Nile upstream, which is driving conflict and disease and is potentially leaving the region uninhabitable.
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