Results 61 to 70 of about 32,223 (288)

Icy ocean worlds - astrobiology research in Germany

Frontiers in Astronomy and Space Sciences
Icy bodies with subsurface oceans are a prime target for astrobiology investigations, with an increasing number of scientists participating in the planning, development, and realization of space missions to these worlds.
Fabian Klenner, Mickael Baqué, Kristina Beblo-Vranesevic, Janine Bönigk, Marc S. Boxberg, Bernd Dachwald, Ilya Digel, Andreas Elsaesser, Clemens Espe, Oliver Funke, Ernst Hauber, Dirk Heinen, Florence Hofmann, Lucía Hortal Sánchez, Nozair Khawaja, Nozair Khawaja, Maryse Napoleoni, Ana-Catalina Plesa, Frank Postberg, Autun Purser, Tina Rückriemen-Bez, Susanne Schröder, Dirk Schulze-Makuch, Dirk Schulze-Makuch, Dirk Schulze-Makuch, Dirk Schulze-Makuch, Stephan Ulamec, Jean-Pierre Paul de Vera   +27 more
doaj   +1 more source

Spectral signatures of photosynthesis II: coevolution with other stars and the atmosphere on extrasolar worlds

, 2007
As photosynthesis on Earth produces the primary signatures of life that can be detected astronomically at the global scale, a strong focus of the search for extrasolar life will be photosynthesis, particularly photosynthesis that has evolved with a ...
Antígona Segura, David Crisp, Giovanna Tinetti, Govindjee, , Janet Siefert, Leger A., Leger A., Martin Cohen, Nancy Y. Kiang, Robert E. Blankenship, Tucker C.J., Victoria S. Meadows, Wang A.   +12 more
core   +2 more sources

Limits of life and the habitability of Mars: The ESA space experiment BIOMEX on the ISS [PDF]

, 2019
BIOMEX (BIOlogy and Mars EXperiment) is an ESA/Roscosmos space exposure experiment housed within the exposure facility EXPOSE-R2 outside the Zvezda module on the International Space Station (ISS).
Alawi, Mashal, Backhaus, Theresa, Baqué, Mickael, Berger, Thomas, Billi, Daniela, Bohmeier, Maria, Böttger, Ute, Cockell, Charles [u.v.m.], Elsaesser, Andreas, Vera, Jean-Pierre de   +9 more
core   +1 more source

Astrobiology and astrophilosophy: subsuming or bifurcating diciplines? [PDF]

, 2019
Initially, astrobiology subsumed into philosophy. However, philosophy has increasingly subsumed into astrobiology concurrent with it steadily becoming an observational and experimental activity that mainly focuses on the link between life and the cosmos,
von Hegner, Ian
core  

The Water Activity of Mars-relevant Multicomponent Brines: The Changing Influence of Perchlorate on Habitability over Time

The Planetary Science Journal, 2023
Low water activity limits the habitability of aqueous environments, and salts present on Mars are known to reduce water activity. As environmental brines are not pure solutions of a single salt, predicting their water activity is difficult without direct
Adam H. Stevens, Charles S. Cockell
doaj   +1 more source

Astrobiology: Science Learning Activities for Afterschool [PDF]

, 2006
This product consists of eight astrobiology after-school activities, each of which may be completed in about one hour. The science of astrobiology is concerned with the question of whether or not life exists on other planets.

core  

Spectral signatures of photosynthesis I: Review of Earth organisms

, 2007
Why do plants reflect in the green and have a 'red edge' in the red, and should extrasolar photosynthesis be the same? We provide: 1) a brief review of how photosynthesis works; 2) an overview of the diversity of photosynthetic organisms, their light ...
Bebout B.M., Des Marais D.J., Ehrenreich A., Govindjee, , Janet Siefert, Joliot P., Karentz D., Manning W.M., Miller S.R., Nancy Y. Kiang, Reeburgh W.S., Robert E. Blankenship, Tucker C.J., Tucker C.J.   +13 more
core   +1 more source

Contactless Conductivity Detection for Capillary Electrophoresis—Developments From 2020 to 2024

ELECTROPHORESIS, EarlyView.
ABSTRACT The review covering the development of capillary electrophoresis with capacitively coupled contactless conductivity detection from 2020 to 2024 is the latest in a series going back to 2004. The article considers applications employing conventional capillaries and planar lab‐on‐chip devices as well as fundamental and technical developments of ...
Peter C. Hauser, Pavel Kubáň
wiley   +1 more source

Physicochemical Parameters Limiting Growth of Debaryomyces hansenii in Solutions of Hygroscopic Compounds and Their Effects on the Habitability of Martian Brines

Life, 2021
The availability of liquid water is a prerequisite for all lifeforms on Earth. In hyperarid subzero environments like the Dry Valleys in Antarctica or the near-subsurface of Mars liquid water might be provided temporarily by hygroscopic substances that ...
Jacob Heinz, Vita Rambags, Dirk Schulze-Makuch   +2 more
doaj   +1 more source

Life Beyond the Solar System: Space Weather and Its Impact on Habitable Worlds [PDF]

, 2018
The search of life in the Universe is a fundamental problem of astrobiology and a major priority for NASA. A key area of major progress since the NASA Astrobiology Strategy 2015 (NAS15) has been a shift from the exoplanet discovery phase to a phase of ...
Airapetian, V. S., Alexander, D., Cohen, O., Danchi, W. C., Dong, C. F., Fahrenbach, A., France, K., Funke, B., Glocer, A., Grenfell, J. L., Gronoff, G., Guedel, M., Hallinan, G., Henning, W. G., Jackman, C., Jin, M., Johnstone, C., Kay, C., Kobayashi, K., Kuang, W., Leisawitz, D., Lueftinger, T., Lynch, B., Maehara, H., Manchester, C., Mlynczak, M., Notsu, Y., Puertas, M. Lopez, Rugheimer, S., Sojka, J., Stamenkovic, V., Stevenson, K. B., van der Holst, B., Verkhoglyadova, O., Yamashiki, Y., Zank, G.   +35 more
core   +1 more source