Kuongorora kwokutanga kwakatangwa muna 1920s, apo Frank E. Ross akawana kuti mifananidzo ye ultraviolet yakaratidza tsanangudzo yakawanda yakanga isipo mumagetsi anooneka uye infrared. Akataura kuti izvi zvaive nekuda kweiyo yakasviba, yakasviba pasi pemhepo ine makore akakwirira e cirrus pamusoro payo. Kuongorora kwe spectroscopic mumakore ekuma 1900 kwakapa zviratidzo zvekutanga pamusoro pekutenderera kweVenus. Vesto Slipher akaedza kuchinja Doppler yeVenus, asi haana kuwana chero kutenderera. Akafungidzira kuti nyika inofanira kunge yakatenderera kwenguva yakareba kupfuura zvaifungidzirwa. Gare gare muna 1950s, kuongorora kwakananga kwakananga kwakaratidzwa neRadio Telescope yaMaxwell, iyo yakaratidza kuti zvinhu zvitatu zvepasi zveVenus zvakaonekwa munguva yekupedzisira.
Venus