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Palestinians inspect the total lunar eclipse by a telescope in the sky of Khan Younis in the southern of Gaza Strip on July 27, 2018. The longest "blood moon" eclipse this century began on July 27, coinciding with Mars' closest approach in 15 years to treat skygazers across the globe to a thrilling celestic spectacle. Unlike with a solar eclipse, viewers will need no protective eye gear to observe the rare display. Photo by Ashraf Amra