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Einstein right on time
Most precise experiment to date confirms one of Einstein's predictions
X-otic X-ray visions
Using their X-ray vision, astronomers have for the first time found two black holes in the same galaxy, and taken a peek inside a neutron star.
What is a black hole – mathematically?
Pau Figueras explains how Einstein's theories predicted the existence of black holes, and how to describe...
What is a black hole – physically?
Small, dark, and very hard to see. This and far more indepth answers to every question you ever wanted to...
A new particle for Christmas?
A bump in the data from the LHC promises exciting news.
Playing with numbers
Here's a game: pick a positive natural number and if yours is the smallest number no one else has picked, you...
Where would the world be without mathematics?
A new competition invites young people aged 11 to 19 to explore the history of maths for a chance to win cash...
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