eli5: How does gravity bend space-time when space is…nothingness? How do you bend nothing?

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I understand time has more of a construct to it making it easy to manipulate and bend but I don’t understand how the same can be true for space. Doesn’t the fact that space bends means it something fundamentally rather than nothing emptiness?

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Anonymous 0 Comments

I think you’ve started to answer your own question: what we think of as “nothing” is actually something that’s turned out to be pretty complicated.

Our observations lead us to conclude that reality behaves as though we can assign a degree of “bend” to every point in space relative to us, even if a lot of space happens to have zero bend to it.

Maybe think of space being like sheet music: even when there’s nothing being played in a song, there’s still notation for how many beats of rest are in the song at that point. The silence isn’t empty *nothingness,* exactly, because each silence has its own specific qualities like duration.

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