Radio signals are detected in the atmosphere of Venus

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At 833 km from the surface of Venus, the Parker Solar Probe instrument records low-frequency radio signals, and this study shows that the planet’s upper layers are searching for the ionosphere.

This is the first time in nearly three decades that an instrument has been able to record direct measurements of the atmosphere above Venus, and the recorded data could provide scientists with new information.

“I am very excited to receive new data from Venus,” said Kline Collinson, an astronomer at NASA’s Goddard Space Flight Center. Scientific warning, Wednesday (5/5/2021).

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According to Collinson, the signal recorded is the same type of signal that was recorded when Galileo passed through the ionosphere on Jupiter’s moon.

After researchers studied these types of signals, the team was able to use them to calculate the density of venous cyanosphere and compare it to the last direct measurement made in 1992.

Interestingly, the experts found that the ionosphere layer was thinner in the new measurements than it was in 1992.

The team believes this has something to do with the solar cycle. Every 11 years, the sun’s poles change places, from south to north and north to south.

It is not yet known what drives this rotation, but experts do know that the poles change when the magnetic field is weak.

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These recent Venus measurements show that the Venus ionosphere changes in sync with the solar cycle.

The cause of this effect of the Venus ionosphere on the solar cycle is not yet known, but the research team has two main theories.

First, the upper boundary of the ionosphere can shrink at low altitudes during minimal activity of the Sun, which prevents ionized atoms from flowing towards the night side, resulting in a thin night side ionosphere.

Second, the ionosphere is leaking into space at breakneck speed during the minimal activity of the Sun.

However, experts are not yet sure of this, and hope there is a destination to Venus that could clarify these findings in the future.

Currently there are not many scientific missions targeting Venus because it is considered difficult because the planet has a poisonous environment with temperatures of 462 degrees Celsius.

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