We do not know how to make an object invisible in physical space.

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The Higgs is associated with an invisible field predicted to permeate throughout all of space interacting with particles to give them mass.

CNN: Higgs and the holy grail of physics

The proton aurora is invisible to the naked eye and has never been viewed from space.

BBC: Atmosphere Nasa

The gallery basement is a black-box space filled with movable walls, where the architecture is meant to be invisible.

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