Nasa has chosen two missions that will direct the Earth to the nearby planet Venus. The goal is to study how Venus became a life-hostile planet like today, even though Venus and Earth have many similarities and may have been the first life-friendly planet in the solar system.
Nasa selected future missions from four proposals it received in February 2020. Nasa will fund both missions in the development phase with $ 500 million. The launches are scheduled for 2028-2030.
Davinci + (Deep Atmosphere Venus Investigation of Noble Gases, Chemistry, and Imaging) makes measurements of the Venus atmosphere and aims to provide information on how the atmosphere has formed and evolved. In addition, the measurements help to understand whether Venus has had running water and seas in ancient times. Measurements are made with a sonar descending through the atmosphere.
The mission will also provide the first high-resolution images of the surface forms of Venus that Nasa compares To the continents of the country. They refer to plate-like tectonics on Earth on Venus.
Davinci + is Nasa’s first flight to Venus since 1978. The research is led by Nasa’s Goddard Research Center.
Veritas (Venus Emissivity, Radio Science, InSAR, Topography, and Spectroscopy) maps the surface with the goal of studying why Venus’s evolution differs so significantly from Earth’s evolution. The probe examines the surface of Venus with a synthetic aperture radar. The Sar radar produces a 3D model of almost the entire surface of Venus.
The aim is to find out whether Venus’ plate tectonics and volcanic activity are still active. In addition, the sonar measures the infrared emission of the surface of Venus, which is used to determine hitherto unknown types of rocks in Venus. At the same time, it remains to be seen whether active volcanoes will release water vapor into Venus ’atmosphere.
The study is led by Nasa’s Jet Propulsion Laboratory unit. Infrared equipment is procured by the German aerospace organization DLR. The other technical parts of the mission are the responsibility of the Italian Space Agency and the French Space Agency.
In addition to these, Nasa selected two technology demonstrations that will fly with the research missions.
The Veritas mission is flown by the Deep Space Atomic Clock-2 atomic clock built by JPL, whose precise timing signal enables the autonomous operation of spacecraft and improves radiological observations.
Davinci +, on the other hand, flies an ultraviolet spectrometer, which scientists use to find out the property of Venus’ atmosphere, which absorbs almost everything from UV radiation coming to the planet.
Source: Tivi by www.tivi.fi.
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