Seeking the Three Signs of Life:

AMINO ACIDS:

Large quantities of amino acids such as glutamic acid could indicate biological processes on the Saturn moon.

FAT:

If the number of carbon atoms in organic molecules such as fat follows a repetitive pattern, the lipids were produced by life.

HYDROCARBONS:

A special relationship between carbon and hydrogen in hydrocarbons with single bonds – known as alkanes – is an indication of the existence of life.

GEYSER In 2005, Cassini found geysers including water, gas, and minerals on Enceladus.