Einstein believed that black holes didn't really exist. But they do: that much we know. We don't know much else about them.

That’s exactly what happened in 1900 at the International Congress of Mathematicians at Sorbonne University in Paris.

Before Einstein, special relativity, and E = mc2, what was the prevailing theory on the Sun's seemingly eternal energy?

Dark matter is hypothesized to outweigh "ordinary matter" in the universe by a factor of five. That means all the stuff we ...

Conventional accounts of the birth of quantum theory often overlook the pivotal role of one of its luminaries – and this has led to a persistent misunderstanding of what it really means, argues physic ...

For 100 years, quantum theory has painted the subatomic world as strange beyond words. But bold new interpretations and experiments may help us to finally grasp its true meaning ...

The universe’s physical constants are so fine-tuned, it’s statistically impossible for them to exist by chance. Yet here we are - on a planet orbiting a star, asking questions. The only explanation?

A new study in Monthly Notices of the Royal Astronomical Society by researchers including István Szapudi of the University of ...

A new paper provides scientists with a groundbreaking tool for understanding cataclysmic events. Physicist Glennys Farrar has ...

Superpositions of quantum states known as Schrödinger cat states can be created in “hot” environments with temperatures up to 1.8 K, say researchers in Austria and Spain. By reducing the restrictions ...