Einstein cross
(biochemistry) urokinase when active against plasminogen
(astronomy, physics) A gravitational lens configuration resulting in four duplicated images of the back ground image around the central gravitationally lensing object, in a cross configuration.
plural of ball pit
(zoology) Any fly of the family Fanniidae.
調査中に、淡いクエーサーがレンズ銀河の周囲に十字形に4つに複製される重力レンズ配置（アインシュタイン十字）が発見され、強い重力レンズ効果が確認されました。
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