380 to 820 nm are reported for laboratory simulations of lightning in the atmospheres of Venus, Jupiter, and Titan. The Optical emissions from lightning provide information for observations were made at 1 and 5 bars of pressure for Venus estimating the altitude, latitude, and longitude of lightning and Jupiter and at 1 bar for the Titan mixture. The spectra were storms, the energy of the discharges, and the production obtained by observing laser-induced plasmas with a scanning of important trace species such as HCN and C 2 H 2 . Visible spectrometer and an optical multichannel analyzer. Simulalightning has been observed in the jovian atmosphere by tions of lightning show that atomic line and continuum radiathe two Voyager spacecraft (Smith et al. 1979, Cook et tion dominate the spectra. Weak molecular band radiation from al. 1979, Malgalhaes and Borucki, 1991), in the venusian CN was also observed for Venus and Titan. As the ambient atmosphere by orbiters (Kransnopolsky 1983), and by pressure was increased from 1 to 5 bars, the prominence of the ground-based observations (Hansell et al. 1995). line radiation diminishes compared to the continuum radiation, With a single exception, no spectra have been obtained some lines disappear, and the intensity of the molecular band of extraterrestrial lightning. The single exception was obradiation increases. Laboratory results for the venusian lighttained by a scanning spectrometer aboard the Venera 9 ning spectrum are consistent with those found by the Venera (Krasnopolsky 1983). A composite spectrum was obtained 9 spectrometer when it viewed a storm on the nightside of from a single storm observed during a 70-sec period on Venus. For both Jupiter and Venus, narrow spectral features are present that are ideal for detecting lightning from Earth-October 26, 1975, by adding and averaging the recorded based telescopes.