Venera 5
Soviet Venus probe that returned 53 minutes of atmospheric data.
Venera 5 was a Soviet space probe launched as part of the Venera program to explore Venus. It was designed to obtain atmospheric data during descent through the Venusian atmosphere, returning measurements for 53 minutes before being destroyed by the extreme temperature and pressure.
- launch_date
- 5 January 1969
- mission_type
- Venus atmospheric probe
- operator
- Soviet space program
- launch_mass
- 405 kg (lander capsule)
- landing_coordinates
- 3°S 18°E
- mission_duration
- 53 minutes on 16 May 1969
Lore & Background
Venera 5 was launched from the Baikonur Cosmodrome using a Molniya-M rocket. It was very similar to Venera 4 but of a stronger design. After entering an Earth parking orbit on 5 January 1969 at 06:28:08 UTC, it was sent toward Venus from a Tyazheliy Sputnik. A mid-course maneuver occurred on 14 March 1969, and the probe was released from the bus on 16 May 1969 at a distance of 37,000 km from Venus.
The lander capsule weighed 405 kg and contained scientific instruments. It entered the nightside atmosphere at 06:01 UTC, deploying a parachute when its velocity slowed to 210 m/s. For 53 minutes, the capsule transmitted data every 45 seconds before succumbing to a temperature of roughly 320 °C and pressure of 2,610 kilopascals. The photometer detected a light level of 250 watts per square meter and confirmed the high temperatures, pressures, and carbon dioxide composition found by Venera 4.
The spacecraft carried a medallion with the State Coat of Arms of the Soviet Union and a bas-relief of Lenin to the night side of Venus. Based on Venera 4 results, the lander included new chemical analysis experiments and smaller parachutes to reach full crush depth before power loss.
Reader's Guide
Venera 5 was part of the Soviet Venera program's effort to characterize Venus's atmosphere. Its 53-minute data transmission provided critical measurements of pressure, temperature, chemical composition, and light levels, confirming and refining findings from Venera 4. The probe's design improvements—stronger construction, smaller parachutes, and tuned chemical analyzers—reflected lessons learned from its predecessor. The data returned, including a photometer reading of 250 watts per square meter, helped establish the extreme conditions of Venus's lower atmosphere. Though the lander was destroyed by the environment, its successful return of atmospheric data advanced understanding of Venus's dense, carbon-dioxide-rich atmosphere. The mission demonstrated the Soviet capability to operate in extreme planetary conditions and set the stage for subsequent Venera landers.
Did You Know?
- Venera 5 carried a medallion with the State Coat of Arms of the Soviet Union and a bas-relief of Lenin to the night side of Venus.
- The lander transmitted data every 45 seconds for 53 minutes before being destroyed by temperature and pressure.
- Its parachute was made smaller than Venera 4's to ensure the capsule reached full crush depth before running out of power.
- The photometer detected a light level of 250 watts per square meter on Venus's nightside.
Frequently Asked Questions
What is Venera 5?
Venera 5 was a 405 kg Soviet lander capsule sent to Venus as part of the Venera atmospheric exploration program. It was built specifically to collect scientific readings while falling through the thick Venusian atmosphere.
What was Venera 5's role or mission?
Its job was to transmit atmospheric measurements—temperature, pressure, and composition—during its descent through Venus's clouds. The probe functioned for 53 minutes before the crushing heat and pressure ended the mission.
When was Venera 5 launched and when did it complete its data run?
The spacecraft lifted off on 5 January 1969 and finished its 53-minute atmospheric survey on 16 May 1969.
Where did Venera 5 descend on Venus?
The probe came down at roughly 3 degrees south latitude and 18 degrees east longitude, a location on the Venusian surface that was not directly observed by the craft itself.
Why is Venera 5 considered important?
It delivered some of the first in-situ readings from deep within Venus's atmosphere, confirming just how hostile the surface environment truly was. Those 53 minutes of data shaped decades of subsequent Venus exploration planning.
More in Derelict landers 1-24
Spotted an error? Know more?
This is a living reference — every entry is fact-audited, and reader corrections feed straight into our audit queue. Suggest an edit · See this site's audit record