Nasa plans two venus missions for examining atmosphere and surface

NASA plans two Venus missions for examining atmosphere and surface

After about 30 years, nasa returns to venus. The us space workforge has called two new missions to the sun-sunner neighboring planet. While the mission davinci + the externally dense atmosphere will be examined, the mission veritas is the necessary of the venus surface. Both missions should help the different development of earth and venus clear. The nasa plans to start the two missions between 2028 and 2030.

The davinci + mission (deep atmosphere venus investigation of noble gases, chemistry, and imaging) should penetrate into venus atmosphere and examine their composition. This should be clarified how these originated and has developed. A probe lowered into the extremely dense atmosphere is intended to measure noble gases to determine differences to the earth’s atmosphere.

Finally, there is an atmosphere prere as on earth in 900 meters sea depth. The surface about 465 degrees celsius heib. This can not be explained alone from the lower near the sun. Especially since the atmosphere is so dense and ultraviolet radiation is filtered so that it absorbs the half of the solar energy.

Davinci + to the atmosphere meng

The dynamics of the venus atmosphere raises many questions. Thus, among other things, uniquely, why the atmosphere rotates about 60 times as fast as the planet itself (super rotation). In order to better understand the climatic events, it is necessary to examine the interactions between atmosphere, surface and the interior of the planet.

Davinci + is said to be the first high-resolution images of the venus characteristic "tessera" make, named after the russian word for roof tiles: uneven, crushed areas that cover about ten percent of the surface, mostly in high regions. They indicate a long sequence of tectonic deformations. Despite the variety of their volcanic structures, there was no volcanic activity on venus so far.

Veritas for surface research

The second venus mission, veritas (venus emissivity, radio science, insar, topography, and spectroscopy), is intended to map the surface of the neighboring planet to understand geological development. By radar veritas should measure the venus from the orbit to capture surface surfaces of the planet and to create a 3d reconstruction of the topography. This should be determined whether the displacement of tectonic plates and volcanoes are still active.

In addition, veritas should capture infrared emissions of the venus surface. Thus, the previously largely unknown rock types on venus should be determined, and whether volcanoes still deliver water vapor into the atmosphere. The infrared sensor is provided by the german center for aerospace.

Venus budget moderately opposite mars missions

For the development of the two missions, nasa plans a budget of a maximum of 500 million us dollars. The cost of the start and transport to venus are not included. As a time window for both missions, nasa sees 2028 to 2030. The last nasa flight to venus started in 1989 with the magellan room probe, which explored the neighboring planet until 1994 from the orbit and allowed a look under the hullen of venus.

Compared to the mars missions, the venus is treated by nasa stepmutter. According to casey threesom planetary society if nasa has invested $ 3.7 billion in venus missions so far, while mars missions cost 28.5 billion dollars. The soviet union has been much more interested in venus.

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