Results 91 to 100 of about 2,000 (198)

Herschel/HIFI spectroscopy of the intermediate mass protostar NGC7129 FIRS 2 [PDF]

, 2010
Herschel/HIFI observations of water from the intermediate mass protostar NGC 7129 FIRS 2 provide a powerful diagnostic of the physical conditions in this star formation environment. Six spectral settings, covering four H_2^(16)O and two H_2^(18)O lines,
Blake, G. A., Johnstone, D., Lis, D.
core  

Diagenetic History and Biosignature Preservation Potential of Fine‐Grained Rocks at Hogwallow Flats, Jezero Crater, Mars

Journal of Geophysical Research: Planets, Volume 129, Issue 11, November 2024.
Abstract The Mars 2020 Perseverance rover discovered fine‐grained clastic sedimentary rocks in the “Hogwallow Flats” member of the “Shenandoah” formation at Jezero crater, Mars. The Hogwallow Flats member shows evidence of multiple phases of diagenesis including Fe/Mg‐sulfate‐rich (20–30 wt.
A. P. Broz, B. Horgan, H. Kalucha, J. R. Johnson, C. Royer, E. Dehouck, L. Mandon, E. L. Cardarelli, B. Garczynski, J. H. Haber, K. C. Benison, E. Ives, K. M. Stack, N. Mangold, T. Bosak, J. I. Simon, P. Gasda, E. Clave, B. S. Kathir, M. Zawaski, R. Barnes, S. Siljeström, N. Randazzo, J. M. Madariaga, K. Farley, J. Maki, L. Kah, W. Rapin, L. L. Kivrak, A. J. Williams, E. Hausrath, J. I. Núñez, F. Gómez, A. Steele, T. Fouchet, J. F. Bell, R. C. Wiens   +36 more
wiley   +1 more source

A Miniaturized 3D Heat Flux Sensor to Characterize Heat Transfer in Regolith of Planets and Small Bodies

Sensors, 2020
The objective of this work is to present the first analytical and experimental results obtained with a 3D heat flux sensor for planetary regolith. The proposed structure, a sphere divided in four sectors, is sensible to heat flow magnitude and angle ...
Manuel Domínguez-Pumar, Jose-Antonio Rodríguez-Manfredi, Vicente Jiménez, Sandra Bermejo, Joan Pons-Nin   +4 more
doaj   +1 more source

Detection of OH+ and H_2O+ towards Orion KL [PDF]

, 2010
We report observations of the reactive molecular ions OH+, H_(2)O+, and H_(3)O+ towards Orion KL with Herschel/HIFI. All three N = 1-0 fine-structure transitions of OH+ at 909, 971, and 1033 GHz and both fine-structure components of the doublet ortho-H_ ...
Bell, T. A., Blake, G. A., Boogert, A., Emprechtinger, M., Gupta, H., Karpov, A., Kooi, J., Latter, W. B., Lis, D. C., Lord, S. D., Morris, P., Phillips, T. G., Zmuidzinas, J.   +12 more
core  

APRESENTANDO OUTROS SISTEMAS SOLARES NAS AULAS DE CIÊNCIAS ATRAVÉS DE FERRAMENTAS ONLINE E APLICATIVOS DIGITAIS

Educação: Teoria e Prática, 2017
A descoberta dos exoplanetas – planetas que orbitam outras estrelas - tem fortes implicações não apenas sobre nosso conhecimento a respeito dos sistemas solares, mas também sobre o estudo da vida no universo, uma vez que expande as possibilidades de ...
Michele Rascalha, Charles Morphy Dias Santos   +1 more
doaj   +1 more source

Characterization of a Subsurface Biosphere in a Massive Sulfide Deposit At Rio Tinto, Spain: Implications For Extant Life On Mars [PDF]

The recent discovery of abundant sulfate minerals, particularly Jarosite by the Opportunity Rover at Sinus Merdiani on Mars has been interpreted as evidence for an acidic lake or sea on ancient Mars [1,2], since the mineral Jarosite is soluble in liquid ...
Aguilera, A., Amils, R., Dunagan, S., Fernandez-Remolar, D., Gomez, F., Gomez-Elvira, J., Gonzalez-Toril, E., Rodriguez, N., Stevens, T., Stoker, C. R.   +9 more
core   +1 more source

An Invited Preface for the Following Book: Astrobiologia, Uma Ciencia Emergente [PDF]

Since the dawn of civilization, we have beheld at the beauty and wonder of the natural world around us and wondered how it came to be. We have pondered the past, and have been intrigued about the future. For this we are unique.
Rothschild, Lynn J.
core   +1 more source

Searching for stable fullerenes in space with computational chemistry

, 2019
We report a computational study of the stability and infrared (IR) vibrational spectra of neutral and singly ionised fullerene cages containing between 44 and 70 carbon atoms.
Cami, Jan, Candian, Alessandra, MacIsaac, Heather, Peeters, Els, Rachid, Marina Gomes, Staroverov, Viktor N.   +5 more
core   +1 more source

Discovery of crested quasi-periodic eruptions following the most luminous SRG/eROSITA tidal disruption event

Astronomy & Astrophysics
We report the discovery of complex flaring activity from the galactic nucleus hosting the five-year-old tidal disruption event eRASSt J234402.9−352640 (J2344).
Baldini P., Rau A., Merloni A., Trakhtenbrot B., Arcodia R., Giustini M., Miniutti G., Brennan S. J., Freyberg M., Sánchez-Sáez P., Grotova I., Liu Z., Lian T., Nandra K.   +13 more
doaj   +1 more source

Reflexões acerca de uma Webconferência de Divulgação Científica sobre Astrobiologia

Cadernos de Educação Tecnologia e Sociedade
Este artigo tem como objetivo investigar a realização da webconferência intitulada “Busca por bioassinaturas em superfícies planetárias” ministrada pelo professor Douglas Galante, em 2021. Em especial, foram examinadas as concepções dos participantes deste evento sobre os tópicos abordados.
José Euripedes Bezerra Brito, Ricardo Roberto Plaza Teixeira   +1 more
openaire   +1 more source