A theory is outlined for analyzing the observed mean Doppler shift of Fraunhofer lines in the zodiacal light, assuming that the particle distribution in terms of composition, size, and shape is constant throughout the interplanetary medium. The theory is applied to the observed Doppler shift of H-beta; the Doppler shift in and out of the ecliptic

High-resolution (up to 0.02 kayser) airborne spectral observations of Jupiter in the range from 105 to 140 kaysers are presented. The procedures used to remove the effects of telluric opacity and for the brightness-temperature calibration are described. The resulting spectrum is compared with recent calculations for different Jovian models. Some

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