glycine in space

After analysis of samples of the comet Wild 2 brought back by the Stardust spacecraft, NASA researchers have found the amino acid glycine to be present in the comet, according to a recent NASA release. Glycine is considered to be one of the building blocks of life, and this strengthens the case that substances favorable to the formation of life may have been delivered to Earth from space—and may likewise have been delivered to other planets by other comets.

This is the first time that glycine has been found in a comet.