Many people think relativity puts a hard speed limit on the universe, but it actually opens up the possibility of faster-than-light travel - if we can overcome some significant practical hurdles.
General relativity isn’t only a powerfully descriptive theory, but there’s a beauty in its elegance.
General relativity challenges our intuitive conception of how space and time work, which might explain why it’s such a popular target for crank theorists.
It’s possible that had Einstein not conceived of general relativity, then we’d still be at a loss to explain gravity to this day.
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Special relativity was inspired, but it took true genius to conceive of general relativity. Had Einstein not come up with it, it may have taken decades for us to figure it out.
You can feel the weight of an object on Earth because of its mass. But what is mass?
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