Results 11 to 20 of about 15,700 (208)
Frontiers in Astronomy and Space Sciences, 2023 Meteor plasmas and impact events are complex, dynamic natural phenomena. Simulating these processes in the laboratory is, however, a challenge. The technique of laser induced dielectric breakdown was first used for this purpose almost 50 years ago. Since
Martin Ferus +35 more
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Universe, 2021 The growing database of exoplanets has shown us the statistical characteristics of various exoplanet populations, providing insight towards their origins.
Jonathan H. Jiang +4 more
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Ultra-High Pressure Dynamic Compression of Geological Materials
Frontiers in Earth Science, 2019 Dynamic-compression experiments on geological materials are important for understanding the composition and physical state of the deep interior of the Earth and other planets.
Thomas S. Duffy, Raymond F. Smith
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Mathematics, 2022 With the development of aerospace science and technology, more and more probes are expected to be deployed around extraterrestrial planets. In this paper, some special orbits around Jupiter, Saturn, Uranus, and Neptune are discussed and analyzed.
Biao Yang +7 more
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Frontiers in Astronomy and Space Sciences, 2021 In the search for life on other planets, the presence of photosynthetic surface vegetation may be detectable from the colors of light it reflects. On the modern Earth, this spectral reflectance is characterized by a steep increase in reflectance between ...
Owen R. Lehmer +5 more
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Efficient metal emissions in the upper atmospheres of close-in exoplanets
Earth and Planetary Physics, 2018 Atmospheric escape is a key process controlling the long term evolution of planets. Radiative cooling competes for energy against atmospheric escape in planetary upper atmospheres.
Lei Liu, Feng Tian
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Oxygen False Positives on Habitable Zone Planets Around Sun‐Like Stars
AGU Advances, 2021 Oxygen is a promising exoplanet biosignature due to the evolutionary advantage conferred by harnessing starlight for photosynthesis, and the apparent low likelihood of maintaining oxygen‐rich atmospheres without life.
Joshua Krissansen‐Totton +3 more
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The Coming Emptiness: On the Meaning of the Emptiness of the Universe in Natural Philosophy
Philosophies, 2018 The cosmological relevance of emptiness—that is, space without bodies—is not yet sufficiently appreciated in natural philosophy. This paper addresses two aspects of cosmic emptiness from the perspective of natural philosophy: the distances to
Gregor Schiemann
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Frontiers in Astronomy and Space Sciences, 2021 Starting in 2008, NASA has provided the exoplanet community an observational program aimed at obtaining the highest resolution imaging available as part of its mission to validate and characterize exoplanets, as well as their stellar environments, in ...
Steve B. Howell +7 more
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Proceedings of the National Academy of Sciences, 2013 Significance Planets around other stars, or exoplanets, are now known to be common in our galaxy. Exoplanets span a much wider range of physical conditions than the planets in our solar system, and include extremely puffy gas giants to compact rocky planets that can have densities as high as that of iron. The diversity of exoplanets allows us
Spiegel, David S +2 more
openaire +4 more sources