アルベルト・アインシュタインのインスタグラム(alberteinstein) - 6月15日 22時01分

Shortly after Einstein published his new theory of gravity, his general theory of relativity, researchers realized that it predicted that the universe should expanding – a prediction subsequently confirmed by astronomical observations. And if it is expanding today, then running the cosmic film back toward the beginning suggests a highly dense and energetic starting point – the big bang. Join physicist Brian Greene for a visual explanation of the essential ideas as well as an introduction to the underlying math that yields these conclusions.

@brian_greene111 @worldscifest #yourdailyequation

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