Results 81 to 90 of about 29,391 (220)

PAHs and Astrobiology [PDF]

EAS Publications Series, 2011
In dense molecular clouds, the birthplace of stars and planets, interstellar atoms and molecules freeze onto extremely cold dust and ice particles. These ices are processed by ultraviolet light and cosmic rays forming hundreds of far more complex species, some of astrobiological interest.
openaire   +2 more sources

The habitability of the Universe through 13 billion years of cosmic time [PDF]

, 2016
The field of astrobiology has made tremendous progress in modelling galactic-scale habitable zones which offer a stable environment for life to form and evolve in complexity.
Cockell, Charles, Dayal, Pratika, Ward, Martin   +2 more
core   +1 more source

Gliese 581g as a scaled-up version of Earth: atmospheric circulation simulations

, 2011
We use three-dimensional simulations to study the atmospheric circulation on the first Earth-sized exoplanet discovered in the habitable zone of an M star.
Anderson, Charbonneau, Cho, Cho, Cooper, Cooper, Cowan, Dvorak, Edwards, Edwards, Fraser, Gold, Gordon, Held, Heng, Joshi, Joshi, Kevin Heng, Kraucunas, Lammer, Mayor, Menou, Merlis, Mitchell, Peixóto, Pierrehumbert, Roeckner, Saravanan, Scalo, Selsis, Shapiro, Shell, Showman, Showman, Smagorinsky, Smagorinsky, Snellen, Stauffer, Stephenson, Steven S. Vogt, Suarez, Tarter, Thrastarson, Vallis, Vogt, Washington, Watkins, Wordsworth, Wordsworth   +48 more
core   +1 more source

Life-Detection Technologies for the Next Two Decades

, 2018
Since its inception six decades ago, astrobiology has diversified immensely to encompass several scientific questions including the origin and evolution of Terran life, the organic chemical composition of extraterrestrial objects, and the concept of ...
Bodas, Dhananjay, Carr, Christopher, Chen, Huan, Cleaves II, H. James, Fujii, Yuka, Furukawa, Yoshihiro, Genda, Hidenori, Gillams, Richard J., Giri, Chaitanya, Hamano, Keiko, Jia, Tony Z., Kameda, Shingo, Krishnamurthy, Ramanarayanan, Meinert, Cornelia, Meringer, Markus, Paknikar, Kishore, Rajamani, Sudha, Shivaji, Sisinthy, Steele, Andrew, Taniguchi, Masateru, Usui, Tomohiro, Yabuta, Hikaru, Yamagishi, Akihiko   +22 more
core  

Is the Pale Blue Dot unique? Optimized photometric bands for identifying Earth-like exoplanets

, 2016
The next generation of ground and space-based telescopes will image habitable planets around nearby stars. A growing literature describes how to characterize such planets with spectroscopy, but less consideration has been given to the usefulness of ...
Arney, Giada, Catling, David C., Charnay, Benjamin, Krissansen-Totton, Joshua, Meadows, Victoria, Robinson, Tyler D., Schwieterman, Edward W.   +6 more
core   +1 more source

The minimum energy required to build a cell

Scientific Reports
Understanding the energy requirements for cell synthesis accurately and comprehensively has been a longstanding challenge. We introduce a computational model that estimates the minimum energy necessary to build any cell from its constituent parts.
Edwin Ortega-Arzola, Peter M. Higgins, Charles S. Cockell   +2 more
doaj   +1 more source

Astrobiology [PDF]

Nature, 2001
  +5 more sources

Directly Imaging Rocky Planets from the Ground [PDF]

, 2019
Over the past three decades instruments on the ground and in space have discovered thousands of planets outside the solar system. These observations have given rise to an astonishingly detailed picture of the demographics of short-period planets, but are
Artigau, É., Bailey, V., Baranec, C., Beichman, C., Benneke, B., Birkby, J., Bose, S. N., Brandt, T., Chilcote, J., Chun, M., Close, L., Crossfield, I., Currie, T., Dekany, R., Delorme, J. R., Dong, C., Dong, R., Doyon, R., Dressing, C., Fitzgerald, M., Fortney, J., Frazin, R., Gaidos, E., Guyon, O., Hashimoto, J., Hillenbrand, L., Howard, A., Jensen-Clem, R., Jovanovic, N., Kawahara, H., Knutson, H., Konopacky, Q., Kotani, T., Liu, M., Lozi, J., Lu, J., Macintosh, B., Males, J., Marley, M., Marois, C., Mawet, D., Mazin, B., Meeker, S., Millar-Blanchaer, M., Mondal, S., Murakami, N., Murray-Clay, R., Narita, N., Pyo, T. S., Roberts, L., Ruane, G., Serabyn, G., Shields, A., Simard, L., Skemer, A., Stelter, D., Tamura, M., Troy, M., Vasisht, G., Wallace, J. K., Wang, J., Wang, J., Wright, S.   +62 more
core   +1 more source

Perchlorates on Mars enhance the bacteriocidal effects of UV light

Scientific Reports, 2017
Perchlorates have been identified on the surface of Mars. This has prompted speculation of what their influence would be on habitability. We show that when irradiated with a simulated Martian UV flux, perchlorates become bacteriocidal.
Jennifer Wadsworth, Charles S. Cockell
doaj   +1 more source

Terrestrial atmosphere, water and astrobiology

EPJ Web of Conferences, 2010
Primitive life, defined as a chemical system capable to transfer its molecular information via self-replication and also capable to evolve, originated about 4 billion years ago from the processing of organic molecules by liquid water.
Coradini M., Brack A.
doaj   +1 more source