Preliminary Results of the Pioneer Venus Nephelometer Experiment

See allHide authors and affiliations

Science  23 Feb 1979:
Vol. 203, Issue 4382, pp. 790-792
DOI: 10.1126/science.203.4382.790


Preliminary results of the nephelometer experiments conducted aboard the large sounder, day, north, and night probes of the Pioneer Venus mission are presented. The vertical structures of the Venus clouds observed simultaneously at each of the four locations from altitudes of from 63 kilometers to the surface are compared, and similarities and differences are noted. Tentative results from attempting to use the data from the nephelometer and cloud particle size spectrometer on the sounder probe to identify the indices of refraction of cloud particles in various regions of the Venus clouds are reported. Finally the nephelometer readings for the day probe during impact on the surface of Venus are presented.