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Glycine , an amino acid which is a fundamental building block of life has been found in a comet.

This is the first time an amino acid has been found in a comet.

Glycine, has been identified in the samples returned from comet Wild 2 by NASA's Stardust mission.

Comets have long been thought to hold the secrets of our solar system's history and play an important role in delivering the building blocks of life to Earth.

The discovery of glycine in a comet supports the idea that the fundamental building blocks of life are prevalent in space, and strengthens the argument that life in the Universe may be common rather than rare.