The mechanisms of microorganisms transfer from space to earth

Other Title(s)

آليات انتقال الكائنات الحية المجهرية من الفضاء إلى الأرض

Dissertant

Abbas, Marwah Hafiz

Thesis advisor

Karim, Layth Mahmud

Comitee Members

Abd al-Nabi, Amjad
Hadi, Khalid Abd al-Karim
Khalaf, Salman Zaydan

University

University of Baghdad

Faculty

College of Science

Department

Astronomy and Space Department

University Country

Iraq

Degree

Master

Degree Date

2013

English Abstract

Studies that have been extended for more than fifteen contracts for astronomers and space scientists that the microorganisms on Earth are originally came from outer space.

The aim of this study is to try proving how microorganisms comes from outer space, according to the mechanism of scientific Astrophysical, ranging from scattering dust tails of comets as it approached from the Sun by the force of the solar wind that push the particles of dust contaminated with organisms out of the Sun and in different directions, and one of these trends toward the Earth.

Astrophysical equations by which the mechanism of transmission of microorganisms from space to Earth were calculated, namely: Mie theory, are used to calculated the properties of microbial particles extinction to find out appropriate thickness for the protection of particles from the effect of ultraviolet radiation, and the absorption and scattering of light particles lead to radiation pressure on the particles.

Stokes Law, are used to explain the transmission of microorganisms particles through layers of Earth's atmosphere then calculated the velocity and temperature of these particles has taken into consideration the velocity slower to enter through layers of the atmosphere as a result of exposure to pressure, density and friction particles in the air.

Calculated velocity of particles entering through the stratosphere and troposphere of the Earth.

The third mechanical interpreted the event of an outbreak of influenza on the Earth's surface, most often caused by the arrival of the different types of the virus from space in certain repetitive intervals.

We noticed that the highest rate of infection epidemics flu are those which coincided with the rates periodic peaks of the sunspot cycle, which is repeated every 10 - 11 years, where the solar activity top peak, which in turn generates great pressure to the outside work to pay particles of the comet to different directions.

The effect of ultraviolet radiation emitted by the Sun on the organisms can cause damage deoxyribonucleic acid (DNA) for these objects, and the vital degree of damage depends on many factors such as radiation dose, dose rate, type of radiation and particles radius , the following were deduced: The size of Particle affects the speed of particles through their motion.

Virus particles can escape from the solar system faster than particles of bacteria.

This is due to the fact that the size of the smallest the solar wind paid strongly pressure on, and then move more quickly.

This motion enables particles to diffuse through the interplanetary space, where part of these particles takes its way toward the atmosphere of the Earth.

It was noted that the microbial particles > 0.1μm, are entering the Earth's atmosphere with a relatively high velocity > 20km/sec .While those particles< 0.1μm, are penetrate the Earth's atmosphere at low velocity <11km / sec.

It should be noted that the virus, influenza epidemics after attacking living creatures are changing their genetic types from one to another, does not repeating itself again, which led to the conclusion that any major type of repeated appearances in subsequent years, are coming from outer space to Earth.

Main Subjects

Biology
Astronomy

Topics

• Biology
• Life

No. of Pages

122

Table of Contents

• APA
• MLA
• AMA

Language

English

Data Type

Arab Theses

Record ID

BIM-604303