Comets, Meteors and Meteorites, Interplanetary Dust; Structure and Composition

In this chapter, the author summarizes the properties of the Solar System, and how these were uncovered. Over centuries, the arrangement and properties of the Solar System were determined. The distinctions between the terrestrial planets, the gas and ice giants, and their various moons are discussed. Whereas humans have walked only on the Moon, probes have visited all the planets and several moons, asteroids, and comets; samples have been returned to Earth only from our moon, a comet, and from interplanetary dust. For Earth and Moon, seismographs probed their interior, whereas for other planets insights come from spacecraft and meteorites. We learned that elements separated between planet cores and mantels because larger bodies in the Solar System were once liquid, and many still are. How water ended up where it is presents a complex puzzle. Will the characteristics of our Solar System hold true for planetary systems in general?

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On Two Mechanisms of X-Ray Generation in Comets

International Astronomical Union Colloquium ◽

10.1017/s025292110008492x ◽

1985 ◽

Vol 85 ◽

pp. 365-368

Author(s):

S. Ibadov

Keyword(s):

High Temperature ◽

Interplanetary Dust ◽

Dust Particles ◽

Interplanetary Dust Particles ◽

Temperature Plasma ◽

X Ray ◽

Plasma Generation ◽

High Temperature Plasma

AbstractThe intensity of solar X-radiation scattered by a comet is calculated and compared to the proper X-radiation of the comet due to impacts of cometary and interplanetary dust particles. Detection of X-radiation of dusty comets at small heliocentric distances (R ≤ 1 a.u.) is found to be an indicator of high-temperature plasma generation as result of grain collisions.

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Possible morphological similarities between lunar dust particles and interplanetary dust particles collected from earth's atmosphere

Advances in Space Research ◽

10.1016/j.asr.2020.04.017 ◽

2020 ◽

Vol 66 (3) ◽

pp. 715-719

Author(s):

Marek S. Żbik

Keyword(s):

Interplanetary Dust ◽

Dust Particles ◽

Interplanetary Dust Particles ◽

Lunar Dust ◽

Earth’S Atmosphere ◽

Earth's Atmosphere

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A STUDY OF A PULSAR WIND DRIVEN STRUCTURE IN FAR-INFRARED IRAS MAP AT LATTITUDE -10º

Journal of Institute of Science and Technology ◽

10.3126/jist.v22i1.17733 ◽

2017 ◽

Vol 22 (1) ◽

pp. 1-9

Author(s):

Ajay Kumar Jha ◽

Binil Aryal

Keyword(s):

Far Infrared ◽

Density Variation ◽

Color Temperature ◽

Galactic Latitude ◽

Dust Structure ◽

Infrared Astronomical Satellite ◽

Mass Profile ◽

Using Data ◽

Astronomical Satellite ◽

Galactic Longitude

A systematic search of dust structure in the far infrared (100 μm and 60 μm) IRAS (Infrared Astronomical Satellite) survey was performed using Sky View Observatory. In order to find the possible candidate, we used SIMBAD database to locate discrete sources in the region. A deep cavity-like isolated far infrared dust structure (size ~ 4.46 pc × 2.23 pc) at galactic longitude: 284.360o, galactic latitude: -9.549o was found at the distance of about 375 pc. We have studied the flux density variation and then calculated temperature and mass profile of the dust and excess mass using data reduction software ALADIN 7.5 within this region. The dust color temperature was found to lie in the range 23.40 K to 29.28 K. An offset temperature of about 6.0 K was found. The total mass of the dust structure was found to be about 2.55×1027 kg and the excess mass per pixel was 2.52×1024 kg. We also studied the rate of mass loading around the structure. The energy of the pulsar required to create that in homogeneity in the structure was calculated to be 5.04×1036 J. Possible explanations of results will be presented.Journal of Institute of Science and Technology, 2017, 22 (1): 1-9

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