"Picture tells a thousand words"Pictures of PalestineTélécharger Palestine images et photos Plus de 17 308 Palestine images à choisir, sans inscription nécessaire Télécharger en moins de 30 secondesOptical imaging using a 10,000 framepersecond high speed camera showed that sprites are actually clusters of small, decametersized (10–100 m or 33–328 ft) balls of ionization that are launched at an altitude of about 80 km (50 mi) and then move downward at speeds of up to ten percent the speed of light, followed a few milliseconds later by a separate set of upward moving
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