The arrow of time is “irreversible”—time goes forward. This doesn’t seem to follow the laws of physics which work the same going forward or backward in time. Some physicists argue that there is a more fundamental quantum source for the arrow of time.
Dive into the quantum world
For a quick dip into quantum physics, we recommend you browse our Quantum A to Z. You can also read what famous physicists have said about this famously puzzling physics theory. If you’re after more depth, check out our recommendations for popular science books and longer articles. And for the very latest quantum news, see what our media partners Scientific American and Nature are reporting.
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