Results 61 to 70 of about 452 (173)
Tra lingua dell’astronomia e lingua comune
Cuadernos de Filología Italiana, 2015 Il presente articolo analizza fenomeni di passaggio dal settoriale al comune e viceversa nell’ambito dell’astronomia. Lo studio permette di rintracciare suggestive forme di dialogo e non cesure tra passato e presente, tra tecnico e comune, un dialogo ...
Paola Capponi
doaj +1 more source
Characterizing Patterns of Resurfacing on Venus With Volcanoes and Coronae
Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.Abstract One of the major research questions for Venus is the manner in which it resurfaces itself, with a near‐random distribution of a relatively few craters providing the only age constraints for the planet's surface. We use volcanoes and their temporal and spatial relationships to coronae to characterize patterns of coronal resurfacing for ...
Nicholas J. Montiel, Barbara De Toffoli
wiley +1 more source
The Paleomineralogy of the Hadean Eon Revisited
Life, 2018 A preliminary list of plausible near-surface minerals present during Earth’s Hadean Eon (>4.0 Ga) should be expanded to include: (1) phases that might have formed by precipitation of organic crystals prior to the rise of predation by cellular ...
Shaunna M. Morrison +2 more
doaj +1 more source
Seeding the Solar System with Life: Mars, Venus, Earth, Moon, Protoplanets
Open Astronomy, 2020 In the space of the entire universe, the only conclusive evidence of life, is found on Earth. Although the ultimate source of all life is unknown, many investigators believe Earth, Mars, and Venus may have been seeded with life when these planets, and ...
Joseph Rhawn G. +3 more
doaj +1 more source
Pressure as a Limiting Factor for Life
Life, 2016 Facts concerning the stability and functioning of key biomolecular components suggest that cellular life should no longer be viable above a few thousand atmospheres (200–300 MPa).
Rachael Hazael +3 more
doaj +1 more source
, 1997 We present a review of the literature on the subject of a possible collision between the Earthand a meteorite or comet. We emphasize the global effects when sufficient energy is involved.We propose several types of human actions adapted to the physico-chemical nature of thecollider bolide.
openaire +3 more sources
A search for hydroacoustic signals from bolides
IcarusHere we present a survey aimed at detecting hydroacoustic signals from fireballs using the six hydrophone stations operated as part of the Comprehensive Test Ban Treaty Organisation (CTBTO) International Monitoring System. We identified 30 fireballs where propagation paths to stations exist.
Peter Brown +4 more
openaire +2 more sources
Tellus: Series B, Chemical and Physical Meteorology, 2013 Nanometre CaO and pure carbon smoke particles were collected at 38-km altitude in the upper stratosphere in the Arctic during June 2008 using DUSTER (Dust in the Upper Stratosphere Tracking Experiment and Retrieval).
Marco Ferrari +4 more
doaj +1 more source
New insights into the evolutionary history of biological nitrogen fixation
Frontiers in Microbiology, 2013 Nitrogenase, which catalyzes the ATP-dependent reduction of dinitrogen (N2) to ammonia (NH3), accounts for roughly half of the bioavailable nitrogen supporting extant life.
Eric eBoyd, John W. Peters
doaj +1 more source
Frequency Modeling for Bolide Hazard
, 2021 Near-Earth asteroids and meteoroids constitute various levels of impact danger to our planet. On the one end, billions of events associated with small-sized meteoroids have resulted in trivial effects. On the other end, the occurrences of large-sized asteroidal collisions that can cause mass extinctions and may wipe out the modern human civilization ...
openaire +1 more source