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2F8Y7GF Spacetime Scifi Digital Arts concept, Twist clock time distortion warp on space bended curved as hole represent Space and Times of Einstein Theory

What does it mean when we say that space-time is expanding?

6 July 2022

When it comes to something as complex as space-time, intuition comes in different ways, depending on the level of science you have access to, writes Chanda Prescod-Weinstein
Illustration of a clock in a spiral

Time loops may not be forbidden by physics after all

5 July 2022

Physicists find that causal loops, where two events separated in time influence each other in paradoxical ways, are allowed in many theoretical universes, some of which share features with our own

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