Results 51 to 60 of about 1,551,844 (168)
Detecting Life-bearing Extra-solar Planets with Space Telescopes [PDF]
, 2007 One of the promising methods to search for life on extra-solar planets (exoplanets) is to detect life's signatures in their atmospheres. Spectra of exoplanet atmospheres at the modest resolution needed to search for oxygen, carbon dioxide, water, and methane will demand large collecting areas and large diameters to capture and isolate the light from ...
arxiv +1 more source
UV Irradiation and Near Infrared Characterization of Laboratory Mars Soil Analog Samples
Frontiers in Astronomy and Space Sciences, 2020 The search for molecular biosignatures at the surface of Mars is complicated by an intense irradiation in the mid- and near-ultraviolet (UV) spectral range for several reasons: (i) many astrobiologically relevant molecules are electronically excited by ...
Teresa Fornaro +11 more
doaj +1 more source
Semantic Scene Difference Detection in Daily Life Patroling by Mobile Robots using Pre-Trained Large-Scale Vision-Language Model [PDF]
arXiv, 2023 It is important for daily life support robots to detect changes in their environment and perform tasks. In the field of anomaly detection in computer vision, probabilistic and deep learning methods have been used to calculate the image distance. These methods calculate distances by focusing on image pixels.
arxiv
Frontiers in Microbiology, 2020 Perchlorate anions are produced by chemical industries and are important contaminants in certain natural ecosystems. Perchlorate also occurs in some natural and uncontaminated environments such as the Atacama Desert, the high Arctic or the Antarctic Dry ...
Ignacio Gallardo-Carreño +13 more
doaj +1 more source
Large Interferometer For Exoplanets (LIFE): XIII. The Value of Combining Thermal Emission and Reflected Light for the Characterization of Earth Twins [PDF]
A&A 689, A245 (2024)Following the recommendations to NASA and ESA, the search for life on exoplanets will be a priority in the next decades. Two direct imaging space mission concepts are being developed: the Habitable Worlds Observatory (HWO) and the Large Interferometer for Exoplanets (LIFE). HWO focuses on reflected light spectra in the ultraviolet/visible/near-infrared
arxiv +1 more source
Returning Samples From Enceladus for Life Detection
Frontiers in Astronomy and Space Sciences, 2020 Evidence suggests that Saturn's icy moon Enceladus has a subsurface ocean that sources plumes of water vapor and ice vented to space from its south pole.
Marc Neveu +11 more
doaj +1 more source
From Protoplanets to Protolife: The Emergence and Maintenance of Life [PDF]
arXiv, 2006 Despite great advances in our understanding of the formation of the Solar System, the evolution of the Earth, and the chemical basis for life, we are not much closer than the ancient Greeks to an answer of whether life has arisen and persisted on any other planet.
arxiv
Oceanographic Considerations for Exoplanet Life Detection [PDF]
, 2019 Liquid water oceans are at the center of our search for life on exoplanets because water is a strict requirement for life as we know it. However, oceans are dynamic habitats---and some oceans may be better hosts for life than others. In Earth's ocean, circulation transports essential nutrients such as phosphate and is a first-order control on the ...
arxiv +1 more source
The HOMO-LUMO Gap as Discriminator of Biotic from Abiotic Chemistries
LifeLow-molecular-mass organic chemicals are widely discussed as potential indicators of life in extraterrestrial habitats. However, demarcation lines between biotic chemicals and abiotic chemicals have been difficult to define.
Roman Abrosimov, Bernd Moosmann
doaj +1 more source
Life Before Fermi - Back to the Solar System [PDF]
arXiv, 2018 The existence of intelligent, interstellar traveling and colonising life is a key assumption behind the Fermi Paradox. Until recently, detecting signs of life elsewhere has been so technically challenging as to seem almost impossible. However, new observational insights and other developments mean that signs of life elsewhere might realistically be ...
arxiv