Physics and Math
Breaking the Law
Stephen Hawking Was Wrong—Extremal Black Holes Are Possible
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.
Secrets of the Universe
The Biggest Controversy in Cosmology Just Got Bigger
Exceptions to the Rule
‘Gem’ of a Proof Breaks 80-Year-Old Record, Offers New Insights Into Prime Numbers
Attractive Proposition
Uncovering Magnetism’s Mysterious Role in the Galaxy
Dot Physics
How to Run on the Moon
Oracular Pronouncements
Cryptographers Are Discovering New Rules for Quantum Encryption
History of Time
