Biosignatures

In particular, they should look for oxygen, ozone, methane and other "biosignatures" that suggest the presence of some form of biology. ❋ Marc Kaufman (2010)

Of the two, he says, with today's exploration technology we can most easily look for evidence for past life, preserved as fossil "biosignatures" in old rocks. ❋ Unknown (2007)

The rods and other "biosignatures" could all have been produced by inorganic processes, scientists say. ❋ Mac (2006)

In an attempt to learn how long viruses have been around, Stedman's lab, in work led by his doctoral student, Jim Laidler, is trying to figure out what kind of biosignatures viruses might leave behind. ❋ Unknown (2010)

The next generation of space telescopes will be capable of detecting "biosignatures" in the light from planets orbiting other stars ❋ Unknown (2009)

While this search is under way, another hunt for signs of extraterrestrial life—a broad range of potential “biosignatures” ranging from the presence of liquid water to the organic molecules associated with life on Earth—is also moving quickly ahead. ❋ Marc Kaufman (2011)

That means you assume that any apparent biosignatures in meteorites, detected by telescope spectroscopy, identified by missions to planets and moons, or from any other source, are contaminated, the product of nonbiological processes, or something left behind from the testing process. ❋ Marc Kaufman (2011)

We don't know yet and our current instruments cannot detect biosignatures at that distance (short of an unencrypted request for more Chuck Berry). ❋ Ph.D. Athena Andreadis (2010)

These sediments might contain organic materials that could be biosignatures of possible past and present life. ❋ Unknown (2010)

Hot spring fluids are typically laden with dissolved mineral ions that, when they precipitate out and create the hydrothermal deposit, enhance fossilization of all types of biosignatures. ❋ Staq Mavlen (2009)