22th October, 1975 "Venera-9" transferred first images to Earth

"Venera-9" and "Venera-10" – spacecrafts designed in the Soviet Union to study Venus.

"Venera-9" and "Venera-10" – spacecrafts designed in the Soviet Union to study Venus. "Venera-9" was launched on 8 June, 1975, "Venera-10" - 14 June, 1975. The launch vehicles of both devices – is "Proton".

In flight of the "Venus-9" and "Venera-10" two trajectory corrections were made. Two days before reaching Venus from the spacecraft were separated SA, which made a soft landing (22 and 25 October 1975) on the invisible at this time from Earth illuminated side of Venus.

After separation the spacecraft SA were transferred to the span of the trajectory, and then displayed on the orbits of artificial satellites of the planet. For transmission of the scientific information has been implemented the necessary ballistic schemes to provide the required space, the relative position of the spacecraft and the SA. Information received by each of CA, passed on its spacecraft, which by this time was an artificial satellite of Venus, and rebroadcast on Earth. SA entered the planet's atmosphere at an angle of 20-23°.

After aerodynamic braking was descend by parachute for 20 minutes (for the study of the cloud layer), and then the parachute was thrown and a rapid descent was implemented. High-density lower layers of the planet's atmosphere allows for a relatively soft landing, maintaining the work of  unit, using as a brake only rigidly fixed conical aerodynamic braking device and the resistance of the structure itself.