The NASA Spacecraft Parker Solar Probe has discovered a natural radio signal from Venus.
These signals were detected when the space probe flew over the upper atmosphere of Venus.
The Parker Solar probe has measured the Venusian atmosphere.
According to the findings of Parker Solar Probe, just like the earth, planet Venus also has an electrically charged layer of gas in its upper atmosphere called the ionosphere.
The radio signal was picked up by the probe from a sea of charged particles in this layer.
Also, the space probe has confirmed that the upper Venus atmosphere undergoes changes over a solar cycle.
Solar Cycle
The sun is a huge ball of electrically charged hot gas.
This gas moves generating powerful magnetic field.
The magnetic field of the sun undergoes changes every eleven years.