Iridium ka e ji mee ihe na radioisotope thermoelectric generators of unmanned spacecraft such as the Voyager, Viking, Pioneer, Cassini, Galileo, and New Horizons. A họọrọ Iridium iji tinye plutonium-238 na generator mmanụ n'ihi na ọ nwere ike iguzogide okpomọkụ ọrụ ruo 2000 °C na maka ike ya dị ukwuu. Ojiji ọzọ metụtara X-ray optics, karịsịa X-ray telescopes. A na-ekpuchi enyo nke Chandra X-ray Observatory na oyi akwa nke 60 nm. Iridium gosipụtara na ọ bụ nhọrọ kachasị mma maka ịtụgharị X-rays, mgbe platinum na-atụgharị uche. A na-ejikwa iridium mee ihe n'ime ihe ọkụkụ dị elu nke na-eme ka mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi mgbochi
60 nm