 |
|
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z |
|
|
biomarkers
Characteristic chemicals, chemical complexes, biominerals, accumulations of trace elements, fractionations of stable isotopes, spectral features, and other indicators that provide clues to the presence of extant or past biological activity; also known as biological markers. Establishing what are reliable biomarkers, in extraterrestrial rocks or other samples and in the spectra of extrasolar planets, and thereby developing a catalog of biosignatures, is crucial in the search for life beyond the Earth.
Related entry
• extraterrestrial life, detection
Related category
• ASTROBIOLOGY
Also on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History
Transport Concepts & Designs (partner site)