All EM waves travel at 300 000 000m/s (300 million) in a vacuum (space).
Reflection
Visible light is absorbed by a surface and the surface's colour is reflected.
Transmission
The colour passing through is visible, all other wavelengths of light are absorbed.
Black surfaces absorb and emit infared radiation the best and white absorb and emit infared radiation the worst.
All EM waves are transverse.
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