The search for signs of life on exoplanets at the interface of chemistry and planetary science
نویسندگان
چکیده
The discovery of thousands of exoplanets in the last two decades that are so different from planets in our own solar system challenges many areas of traditional planetary science. However, ideas for how to detect signs of life in this mélange of planetary possibilities have lagged, and only in the last few years has modeling how signs of life might appear on genuinely alien worlds begun in earnest. Recent results have shown that the exciting frontier for biosignature gas ideas is not in the study of biology itself, which is inevitably rooted in Earth's geochemical and evolutionary specifics, but in the interface of chemistry and planetary physics.
منابع مشابه
Seager 1..11
The discovery of thousands of exoplanets in the last two decades that are so different from planets in our own solar system challenges many areas of traditional planetary science. However, ideas for how to detect signs of life in this mélange of planetary possibilities have lagged, and only in the last few years has modeling how signs of life might appear on genuinely alien worlds begun in earn...
متن کاملTitania may produce abiotic oxygen atmospheres on habitable exoplanets
The search for habitable exoplanets in the Universe is actively ongoing in the field of astronomy. The biggest future milestone is to determine whether life exists on such habitable exoplanets. In that context, oxygen in the atmosphere has been considered strong evidence for the presence of photosynthetic organisms. In this paper, we show that a previously unconsidered photochemical mechanism b...
متن کاملToward a List of Molecules as Potential Biosignature Gases for the Search for Life on Exoplanets and Applications to Terrestrial Biochemistry.
UNLABELLED Thousands of exoplanets are known to orbit nearby stars. Plans for the next generation of space-based and ground-based telescopes are fueling the anticipation that a precious few habitable planets can be identified in the coming decade. Even more highly anticipated is the chance to find signs of life on these habitable planets by way of biosignature gases. But which gases should we s...
متن کاملExoplanetary Atmospheres—Chemistry, Formation Conditions, and Habitability
Characterizing the atmospheres of extrasolar planets is the new frontier in exoplanetary science. The last two decades of exoplanet discoveries have revealed that exoplanets are very common and extremely diverse in their orbital and bulk properties. We now enter a new era as we begin to investigate the chemical diversity of exoplanets, their atmospheric and interior processes, and their formati...
متن کاملReview and comparison of User Interface Characteristics of (Springer, Elsevier, Ebsco, ISI(WOS) and Ovid) as Perceived by University of Tehran Users
Background and Aim: The present investigation intends to compare and review various user interfaces from user standpoint and to ascertain its linkage with user satisfaction. Method: The research incorporated a descriptive survey of University of Tehran graduate student body. Using a targeted sampling, graduate students from the faculties of chemistry and Biology were selected. The instruments u...
متن کامل