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© NASA The Goldstone Deep Space Communications Complex, situated in the Mojave Desert in California. As Margot explained, the process is similar to shining a light (the radio dish) on millions of tiny reflectors (the planet s landscape) and measuring the reflections to get a sense of how fast its moving: We use Venus as a giant disco ball. We illuminate it with an extremely powerful flashlight about 100,000 times brighter than your typical flashlight. And if we track the reflections from the disco ball, we can infer properties about the spin [state]. The complex way Venus reflects the radio signals causes them to erratically brighten and dim before they are received back on Earth. The Goldstone antenna intercepts the return signal first, followed by the Green Bank antenna about 20 seconds later. The exact timing of the delay allows scientists to know how quickly Venus is spinning while the particular window of time in which the echoes are most similar allows them to gauge

United statesGoldstone deep space communications complexJean luc margotPropulsion laboratorySpace networkGoldstone deep space communicationsNational science foundationCornell universityGreen bank observatoryGreen bankNational radio astronomy observatoryMojave desertஒன்றுபட்டது மாநிலங்களில்தங்கக் கல் ஆழமான இடம் தகவல்தொடர்புகள் சிக்கலானஜீன் லூக் மார்கோட்ப்ரொபல்ஶந் ஆய்வகம்