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Detection of lithium in the exosphere of Mercury [PDF]
Nature CommunicationsMercury’s exosphere contains various neutral species, including hydrogen, helium, sodium, potassium, calcium, magnesium, aluminum, iron, and manganese. Although lithium has been predicted to exist, it had not been detected until now. Here, we demonstrate
Daniel Schmid +11 more
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Satellite mega-constellations create risks in Low Earth Orbit, the atmosphere and on Earth [PDF]
Scientific Reports, 2021 The rapid development of mega-constellations risks multiple tragedies of the commons, including tragedies to ground-based astronomy, Earth orbit, and Earth’s upper atmosphere.
Aaron C. Boley, Michael Byers
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Meteoroid and Space Debris Risk Assessment for Satellites Orbiting the Earth/Moon
Kongjian kexue xuebao, 2023 Interplanetary meteoroids and space debris can impact satellites orbiting the Earth or spacecraft traveling to the Moon. Targeting China Space Station (CSS), 7 satellites selected from the constellation of Beidou ...
FENG Shuai, WANG Ronglan
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Performance of Lunar Regolith Shield under Meteoroid Impact: Uncertainties of a Numerical Prediction
Applied Sciences, 2022 The protection of the future lunar base from radiation, thermal stresses and impacts of meteoroids can be achieved by several options, generally consisting in a shielding system, made of either regolith or combined materials.
Alessia Verdino +4 more
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Shock Synthesis of Organic Molecules by Meteoroids in the Atmosphere of Titan
The Planetary Science Journal, 2023 Thermochemical modeling and shock-tube experiments show that shocks applied to N _2 /CH _4 gas mixtures can synthesize organic molecules. Sufficiently large, hypersonic meteoroids entering the atmosphere of Saturn’s moon Titan should therefore drive ...
Erin E. Flowers, Christopher F. Chyba
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Remote Sensing, 2022 Two lunar flashes are reported and fully analyzed, with one of them fulfilling every criterion preconized in the literature for the characterization of an impact, including confirmation by two simultaneous observations.
David Duarte Cavalcante Pinto +14 more
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Localizing the First Interstellar Meteor with Seismometer Data
Signals, 2023 The first meter-scale interstellar meteor (IM1) was detected by US government sensors in 2014, identified as an interstellar object candidate in 2019, and confirmed by the Department of Defense (DoD) in 2022.
Amir Siraj, Abraham Loeb
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Open Astronomy, 2020 The hypothesis on the role of the meteoroid impacts in the comet nuclei splitting as well as acceleration of their heliocentric velocity are considered.
Guliyev Ayyub, Guliyev Rustam
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Time/Frequency Analysis of Terrestrial Impack Crater Records [PDF]
Journal of Astronomy and Space Sciences, 2006 The terrestrial impact cratering record recently has been examined in the time domain by Chang & Moon (2005). It was found that the ˜ 26 Myr periodicity in the impact cratering rate exists over the last ˜ 250 Myrs.
Heon-Young Chang
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Universe, 2022 Presolar grains are microscopic dust grains that formed in the stellar winds or explosions of ancient stars that died before the formation of the solar system.
Nan Liu, Sergio Cristallo, Diego Vescovi
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