Space Dust Collisions as a Planetary Escape Mechanism.

@article{Berera2017SpaceDC,
  title={Space Dust Collisions as a Planetary Escape Mechanism.},
  author={Arjun Berera},
  journal={Astrobiology},
  year={2017},
  volume={17 12},
  pages={
          1274-1282
        }
}
  • A. Berera
  • Published 2017
  • Physics, Medicine
  • Astrobiology
It is observed that hypervelocity space dust, which is continuously bombarding Earth, creates immense momentum flows in the atmosphere. Some of this fast space dust inevitably will interact with the atmospheric system, transferring energy and moving particles around, with various possible consequences. This paper examines, with supporting estimates, the possibility that by way of collisions the Earth-grazing component of space dust can facilitate planetary escape of atmospheric particles… Expand

Figures and Topics from this paper

Earth's Stratosphere and Microbial Life.
TLDR
Studies of Earth's atmosphere, with emphasis on the stratosphere, are reviewed, addressing implications for astrobiology, the dispersal of microbes around the authors' planet, planetary protection, and climate change. Expand
On the force of vertical winds in the upper atmosphere
For many decades vertical winds have been observed at high altitudes of the Earth's atmosphere, in the mesosphere and thermosphere layers. These observations have been used with a simple oneExpand
On Mautner-Type Probability of Capture of Intergalactic Meteor Particles by Habitable Exoplanets
TLDR
This work employs the simple but yet comprehensive model of intergalactic microprojectile capture by the gravity of exoplanets which enables it to estimate the map of collisional probabilities for an available sample of ex planets in habitable zones around host stars. Expand
The Origin of Life on Earth, the Panspermia Hypothesis and Cosmological DNA Synthesis
The process of the rapid origin of life on Earth is analyzed, taking into account the evolution of our Sun (the beginning of thermonuclear reactions). Given the knowledge about DNA, viruses and theExpand
Implications of Captured Interstellar Objects for Panspermia and Extraterrestrial Life
We estimate the capture rate of interstellar objects by means of three-body gravitational interactions. We apply this model to the Sun-Jupiter system and the Alpha Centauri A\&B binary system, andExpand
Nebula-Relay Hypothesis: Primitive Life in Nebula and Origin of Life on Earth
A modified version of panspermia theory, named Nebula-Relay hypothesis or local panspermia, is introduced to explain the origin of life on Earth. Primitive life, acting as the seeds of life on Earth,Expand
Integrity of the DNA and Cellular Ultrastructure of Cryptoendolithic Fungi in Space or Mars Conditions: A 1.5-Year Study at the International Space Station
TLDR
Qualitatively and quantitatively characterize damage to DNA and cellular ultrastructure in desiccated cells of these two species, within the frame of the same experiment and discuss the implications for using DNA, when properly shielded, as a biosignature of recently extinct or extant life. Expand
Small satellites for space science
TLDR
The goal of this roadmap is to encourage the space science community to leverage developments in the small satellite industry in order to increase flight rates, and change the way small science satellites are built and managed. Expand

References

SHOWING 1-10 OF 73 REFERENCES
Hydrogen Loss from the Terrestrial Planets
The idea of escape of light atmospheric gas is older than the kinetic theory, having been introduced by J. L. Waterston in 1846 (Chamberlain 1963). The thermal escape concept was revived by G. J.Expand
Exchange of meteorites (and life?) between stellar systems.
TLDR
The overall conclusion is that it is very unlikely that even a single meteorite originating on a terrestrial planet in the authors' solar system has fallen onto a terrestrial Planet in another stellar system, over the entire period of their Solar System's existence. Expand
Atmospheric erosion and replenishment induced by impacts upon the Earth and Mars during a heavy bombardment
Consequences of a heavy bombardment for the atmospheres of Earth and Mars are investigated with a stochastic model. The main result is the dominance of the accumulation. The atmospheric pressure isExpand
Ejection of rock fragments from planetary bodies
The recent discovery of ALHA81005, a small meteorite that undoubtedly came from the moon, has raised questions about how an intact rock fragment could survive acceleration to planetary escapeExpand
Impact seeding and reseeding in the inner solar system.
TLDR
Analysis of the subsequent distribution of the escaping impact ejecta throughout the inner Solar System on time scales of 30,000 years shows that efficient return to Earth continues for this duration, and shows that early bacterial life on Earth could have been safeguarded from any purported impact-induced extinction by temporary refuge in space. Expand
Nanometer hypervelocity dust impacts in low Earth orbit
TLDR
The study of 60 nm thick aluminum films exposed to the space environment outside of International Space Station finds that most detected particles have been generated locally as the result of secondaries following larger impacts elsewhere on the ISS or as a result of docking maneuvers by the Progress supply module or by other spacecraft. Expand
A Direct Measurement of the Terrestrial Mass Accretion Rate of Cosmic Dust
TLDR
The mass of extraterrestrial material accreted by the Earth as submillimeter particles has not previously been measured with a single direct and precise technique, but this mass input is comparable with or greater than the average contribution from extraterrestrial bodies in the 1-centimeter to 10-kilometer size range. Expand
Meteors and cosmic dust
Abstract There is something rather poignant about seeing a shooting star. In the quiet of the night, under the clear dark sky, one is witnessing the death of a cosmic dust particle, a particle thatExpand
The Control of Volcanic Column Heights by Eruption Energetics and Dynamics
The height reached by a volcanic eruption column, together with the atmospheric wind regime, controls the dispersal of tephra. Column height is itself a function of vent radius, gas exit velocity,Expand
Resistance of bacterial endospores to outer space for planetary protection purposes--experiment PROTECT of the EXPOSE-E mission.
TLDR
The data demonstrate the high chance of survival of spores on a Mars mission, if protected against solar irradiation, and will have implications for planetary protection considerations. Expand
...
1
2
3
4
5
...