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An illustration shows a photon from the biggest cosmic explosion since the Big Bang reaching Earth.
An illustration shows a photon from the biggest cosmic explosion since the Big Bang reaching Earth. 图：Space.com
署名图：Space.com
原始出处space.com
尺寸2000 × 1125 · PNG

本图来自 space.com，转载自公开渠道。如有侵权请联系 [email protected] 删除。