# Do atoms expand with universe? [duplicate]

As we know, the universe is expanding, galaxies are away from each other. But what about atoms? Do they also in expanding?

What's more, Bohr radius is $$a_0=\frac{\hbar}{m_e c \alpha}$$, if it is increasing, does it means

$m_e$ is decreasing due to the density of Higgs field is getting thinner.

or

$c$ is decreasing

or

$\hbar$ is increasing?

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