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May Antarctic plants grow on Martian and Lunar soil simulants under terrestrial conditions?
An Acad Bras Cienc
December 2024
Universidade do Estado do Rio de Janeiro, Departamento de Biofísica e Biometria, Núcleo de Genética Molecular Ambiental e Astrobiologia, Rua São Francisco Xavier, 524, Pavilhão Reitor Haroldo Lisboa da Cunha, Subsolo, Maracanã, 20550-013 Rio de Janeiro, RJ, Brazil.
Extremophile organisms have been largely studied in Astrobiology. Among them, two antarctic plants emerge as good candidates to become colonizers of other celestial bodies, such as Mars and the Moon. The present research aimed to evaluate survival and growing capacity of Sanionia uncinata and Colobanthus quitensis on Martian (MGS-1) and Lunar (LMS-1) regolith simulants, under terrestrial conditions.
View Article and Find Full Text PDFTidally driven remelting around 4.35 billion years ago indicates the Moon is old.
Nature
December 2024
Collège de France, CNRS, PSL University, Sorbonne University, Paris, France.
The last giant impact on Earth is thought to have formed the Moon. The timing of this event can be determined by dating the different rocks assumed to have crystallized from the lunar magma ocean (LMO). This has led to a wide range of estimates for the age of the Moon between 4.
View Article and Find Full Text PDFNocturnal camouflage through background matching against moonlight.
Proc Natl Acad Sci U S A
January 2025
Estación Biológica de Doñana, Department of Ecology and Evolution, Consejo Superior de Investigaciones Científicas (CSIC), Sevilla E-41092, Spain.
Camouflage is often considered a daytime phenomenon based on light and shade. Nocturnal camouflage can also occur, but its mechanistic basis remains unclear. Here, we analyze the conditions for background matching (BM) of avian predators against the night sky.
View Article and Find Full Text PDFThe formation of complex craters requires some form of transient weakening of target rocks. Acoustic fluidization is one proposed mechanism applied in many numerical simulations of large crater formation. In a companion paper, we describe implementing the Melosh model of acoustic fluidization in the iSALE shock physics code.
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