アルベルト・アインシュタインのインスタグラム(alberteinstein) - 6月19日 03時05分

One of the greatest surprises in the past few decades is the discovery that the expansion of space is speeding up. Join physicist Brian Greene for a discussion of our best explanation: gravity can be repulsive and can thus drive the distant galaxies to rush away ever more quickly.

@brian_greene111 @worldscifest #yourdailyequation

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