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出典:Wiktionary
出典:『Wiktionary』 (2025/11/30 22:47 UTC 版)
A capitalization of Einstein cross.
the Einstein Cross
出典:Wikipedia
出典:『Wikipedia』 (2011/01/25 16:20 UTC 版)
The Einstein Cross or Q2237+030 or QSO 2237+0305 is a gravitationally lensed quasar that sits directly behind ZW 2237+030, Huchra's Lens. Four images of the same distant quasar appear around a foreground galaxy due to strong gravitational lensing.
Einstein Cross