This is John Batchelor. It is 1972. March, the Soviet Union launches another Venus probe in era 72, A and B. A reaches the surface of Venus. And here, Anatoly Zach of Russian Space Web answers the question from my colleague David Livingston, how long it lived on the surface and what experiments they were able to do and get data back.

1972, more than 50 years ago,

Roscosmos, surface of Venus.

Anatoly, much more of this later

about the Vener emissions of 1972.

So at the time when they launched V-72,

they were kind of tens of minutes.

They existed at that time

were between half an hour and hour,

the different ones.

And also they were making progress there.

They were making

them most, those missions most survivable. So it's the time of Vienera 8, they already reached

around half an hour on the surface. And between 20 minutes and half an hour. And they were

striving to work there for one hour. And that later they, in fact, achieved that kind of to work there for one hour and that later they in fact achieved that

kind of milestone because that's what they needed to do soil analysis experiments and to do

photography on the surface but that was later in 1975 so but this one also survived on the

surface for tens of minutes, and that was enough to

essentially transmit very reliable data during the entire descent. So they saw how the temperature

rising in the atmosphere, how the pressure rising, and when it landed on the surface, it continued

sending the data, and they saw very good

information about they did some chemical analysis of the atmosphere as well they for example

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