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Life on Earth

A group of Scientists led by Elizabeth Bell found evidence that life likely existed on Earth at least 4.1 billion years ago. That was 300 million years earlier than previous research suggested. The discovery indicates that life may have begun shortly after the planet formed 4.54 billion years ago.

Scientific revolution begins

German physicist Max Planck discovered his law of blackbody radiation. A blackbody is an idealized physical body which does not reflect any radiation. It only emits its own radiation. Planck's law describes a frequency of this radiation at a given temperature. He had to assume that radiation is emitted in small chunks, called quanta. This started the quantum revolution in physics.

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