Venus, A Planet Of Broken Dreams

INNER PLANETS

Venera 14 photo of the Venusian surface.

Paris (AFP) Nov 06, 2005
The European Space Agency's Venus Express ends a break of more than 10 years in the exploration of a planet that is notoriously hostile to human scrutiny.

Many missions have ended in failure, and those that have succeeded in sending probes or landers to the surface have received a data stream lasting only minutes before the instruments are crushed by the Venusian atmosphere.

Here is a chronology of missions to Venus, previous and planned:

1961: Venera 1 (Venus 1), Soviet-made probe designed for a fly-by of Venus. Fate unknown. Communications with ground station broke down about seven million kilometers (4.37 million miles) from Earth.

1962: Mariner 1 and Mariner 2 (US). Mariner 1 veered off-course and had to be destroyed shortly after launch. Mariner 2 became the first successful interplanetary probe. Found no significant magnetic fields or radiation belts around Venus. Heat sensors found the surface to be dry and scorching hot.

1965-83: Venera 2 - Venera 16. Ambitious programme of Soviet campaign of fly-bys and landings, characterised by several failures but some successes. Among them: Venera 7 (1970), which parachuted a capsule of scientific instruments to the surface, marking the first successful landing on Venus, and Venera 9 (1975), which sent back the first TV pictures of the Venusian surface.

1967: Mariner 5 (US). Flyby, measuring magnetic fields, charged particles, ultra-violet emissions.

1973: Mariner 10 (US). NASA flyby of a probe en route for Mercury. Returned first close up pictures of Venus, despite navigational problems.

1978: Pioneer Venus (US). Orbiter, operated until 1992.

- Pioneer Venus Multiprobe (US). Comprised one large and three small probes, equipped with sensors, that were sent down to the surface in 1978.

1984: Vega 1 and 2 (Soviet). Flybys of Venus while en route to Halley's Comet, dropped scientific packages to surface.

1989: Magellan (US). Orbiter designed to map Venus' surface. Highly successful. Operated until 1994.

- Galileo (US). Flyby of Venus in 1990 while en route to the outer planets.

2004: Messenger (US). Two scheduled fly-bys of Venus (Oct 2006, June 2007) en route to Mercury.

2005: Venus Express (Europe). European Space Agency (ESA) orbiter, designed to study Venus' cloud system.

2008: Planet-C (Japan). Orbiter designed to study dynamics and temperature of Venus' upper atmosphere.

2012: BepiColombo (Europe). ESA probe that will fly-by Venus while en route for Mercury.

INNER PLANETS

New Launch Date For Venus Express

Baikonur, Kazakhstan (ESA) Nov 03, 2005
On Monday 31 October, following a final cleaning and inspection of the Venus Express Spacecraft, the payload fairing of the Soyuz launch vehicle was installed again after it had been removed just a week before after the discovery of contaminants.

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