Seriously though, don't antennas have an impedance of 360 Ω?

The old flat cables with two wires side by side had 300 Ω impedance. The newer coaxial cables have 75 Ω impedance.

Back to the 1-meter antenna in the solar wind: A current on one side of the antenna induces a certain voltage; an equal current on the opposite side cancels that voltage. If the solar wind is uniform, it will not induce a voltage in the antenna.

The value of impedance of free space is exactly (149,896,229 pi)/1,250,000 Ω ≈ 376.73031 Ω. It is exact because it is derived from the definitions of meter, second, speed of light, coulomb and ampere.