Richard M. Goldstein

TL;DR: In this article, pure monochromatic waves of a wavelength of 12.5 cm were beamed toward the planet Mercury and a Fourier power spectrum was produced from the echo signals.

TL;DR: In this article, the radar monitoring of small Earth-orbiting debris at NASAs Goldstone Tracking Station has been extended to an altitude of 3200 km, where the largest of which appears to be remnants of the West Ford Needles, launched over 3 decades earlier and originally designed to have reentered the Earths atmosphere long ago.

TL;DR: In this article, a two-frequency dual-polarization radar-echo study of Saturn's rings was conducted, and the radar observations showed that the rings effectively depolarize linearly and circularly polarized incident waves at the two wavelengths; the ring particles are unusually efficient radar reflectors, yielding approximately the same high total cross section at both wavelengths; and there is an apparent excess of power at the central Doppler shifts when compared with homogeneous scattering models based on the optically observed ring distributions.

TL;DR: In this article, a set of seven radar brightness images and corresponding altitude contours of small portions (circular regions of 1500-km diameter) of the Venus surface located at the center of the disk taken in the winter of 1973-1974 are presented.

TL;DR: Venus may rotate in a direction opposite to that of the earth at a rate of only one revolution in 240 days, which is accurate within 20 percent if the axis of rotation of Venus is perpendicular to the plane of the planet's orbit.