NASA Mars Exploration Rover Opportunity (MER-B) nasa-mars-exploration-rover-opportunity-mer-b NASA's Mars Exploration Rover Opportunity, or MER-B — the solar-powered rover that landed on Mars in January 2004 and operated for nearly 15 years, far outlasting its 90-day mission.
nasa nasa mars mars opportunity-rover opportunity-rover mer-b mer-b space space exploration exploration science science engineering engineering jpl jpl spacecraft spacecraft
techspec tech
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Lun-class Ekranoplan — MD-160 at Kaspiysk Naval Base
Lun-class Ekranoplan — MD-160 at Kaspiysk Naval Base lun-class-ekranoplan-md-160-kaspiysk The MD-160, the only fully operational Lun-class ekranoplan ever deployed, sat decommissioned at the Kaspiysk naval base on the Caspian Sea from the late 1990s until 2020. A Soviet ground-effect vehicle designed to fly meters above the water surface at high speed.
ekranoplan ekranoplan ground effect vehicle ground-effect-vehicle Soviet soviet MD-160 md-160 Lun-class lun-class Caspian Sea caspian-sea engineering engineering aviation aviation naval naval abandoned abandoned Russia russia cold war cold-war grey grey
techspec tech
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AR-15 M4 Lower Receiver — Stripped Anodized Aluminum ar-15-m4-lower-receiver-stripped-anodized Close-up photograph of a stripped AR-15/M4 lower receiver in matte black anodized aluminum with military-spec markings. A precision machining reference image.
firearms firearms military military engineering engineering precision machining precision-machining aluminum aluminum black black
techspec tech
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