National Aeronautics and Space Administration Logo
Follow this link to skip to the main content NASA Banner
Solar System Exploration
Missions
Venera 8
 By Target   By Name   By Decade 
Search all Missions Between:      and      Search
1950-1959 1960-1969 1970-1979 1980-1989 1990-1999 2000-2009 2010-2019 2020+
Venera 08
Venera 8 Mission to Venus

Goals: Following the successful Venera 7, which found the atmospheric pressure at Venus' surface to be half of what that capsule had been designed to withstand, Venera 8 was designed to land a capsule safely on Venus with less of its mass devoted to resisting pressure and more to thermal protection, instruments and a stronger parachute.

Accomplishments: The Venera 8 lander transmitted data for more than 50 minutes after touching down on the planet's surface. During descent, it recorded a sharp change in illumination between 30 and 35 kilometers altitude. Temperature at the landing site was 470 give or take 8°C; pressure was 90 give or take 1.5 atmospheres (about 90 times Earth's atmospheric pressure at sea level). With the Sun at a low angle, the light level at the surface was found to be similar to that on Earth just before dawn, prompting the designers of Venera 9 and 10 to include floodlights. However, Venera 8's successors found noon-time conditions to be much brighter, similar to a dull, cloudy day on Earth.


Key Dates
27 Mar 1972:  Launch
22 Jul 1972:  Venus Landing (09:32 UT)
Status: Successful
Fast Facts
Venera 08 Facts Venera 8 made the first successful landing on the day side of Venus.

Parachutes were tested in wind tunnels containing carbon dioxide heated to 500°C to simulate conditions on Venus.

Radar returns indicated loose surface material similar to terrestrial granite, a finding important to the design of future landers.
Links
Awards and Recognition   Solar System Exploration Roadmap   Contact Us   Site Map   Print This Page
NASA Official: Kristen Erickson
Advisory: Dr. James Green, Director of Planetary Science
Outreach Manager: Alice Wessen
Curator/Editor: Phil Davis
Science Writer: Autumn Burdick
Producer: Greg Baerg
Webmaster: David Martin
> NASA Science Mission Directorate
> Budgets, Strategic Plans and Accountability Reports
> Equal Employment Opportunity Data
   Posted Pursuant to the No Fear Act
> Information-Dissemination Policies and Inventories
> Freedom of Information Act
> Privacy Policy & Important Notices
> Inspector General Hotline
> Office of the Inspector General
> NASA Communications Policy
> USA.gov
> ExpectMore.gov
> NASA Advisory Council
> Open Government at NASA
Last Updated: 2 Dec 2010