Why feel the need to point that out? Would be pure prejudice on the part of anyone would thought Oppenheimer's leftist leanings detracted from his legacy. It would be hard for anyone with intellect in the 1930s not to be effected by events in Spain and Germany.

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Yonder is Dubhe seen on Earth tonight as it was in the days of Grover Cleveland's presidency whereas this way is Deneb seen as it was in the lifetime of Muhammed . If one somehow travelled to Deneb at very close to c then whenever you looked back you'd measure Earth as closer to you than the distance you would simultaneously measure between Earth and Dubhe.