Planetary Exploration

**6**

2019

*Planetology - Future Explorations*

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Chapter 2

Abstract

Technologies for Deviation of

Orbit by Space Debris

and Radu-Constantin Sandu

atmosphere during reentry.

1. Introduction

predicted.

9

Constantin Sandu, Cristian-Teodor Olariu

Asteroids and Cleaning of Earth

The present chapter presents the advanced design and technology of special equipment (SECSL) which uses concentrated solar light for deviation of asteroids and cleaning the space of debris. The elliptical orbit of any cosmic body as presented in Einstein's general theory of relativity is rotating around the ellipse center. The trajectory of a cosmic body is permanently affected by the gravity of other moving cosmic bodies. In the case of asteroids (relatively small masses), orbit changes can lead to a collision with the Earth. At this very moment, our civilization has no efficient and reliable mean to destroy or divert a cosmic body heading toward the Earth. This new idea represents a "light canon" which uses concentrated solar light for deviation or vaporization of dangerous asteroids. The equipment is composed out of two parabolic mirrors (one large and one small) with the same focal point and coincident axes. The mirrors reflect the sunlight between them hence the term "concentrated solar light." Next, a similar idea to the SECSL equipment is presented

but applied to space debris caused mostly by humans and a new way of

Keywords: parabolic mirror, concentrated solar light, equipment, asteroid, satellite, disintegration, cosmic body, deorbit, reentry, space debris, atmosphere

disintegrating satellites, spent rocket boosters, thrust chambers, etc. in the Earth's

Today, there is no reliable nor efficient system which can destroy or deflect asteroids or comets on a collision trajectory with the Earth. At this very moment, we cannot comprehend what could happen if an asteroid impacts the Earth. On April 13, 2029, we might experience just that because asteroid Apophis will pass below the orbit of low earth orbit (LEO) satellites and its exact trajectory cannot be

Albert Einstein, in his general theory of relativity, says that the elliptical orbit of any cosmic body is rotating around the ellipse center (i.e., the perihelion of the orbit is moving continuously). The elliptical orbit or trajectory of any cosmic body (i.e., asteroids, comets, etc.) can be permanently altered by the gravity of other asteroids and planets. Due to this reason, asteroids can be involved in collisions that cause sudden trajectory changes. The trajectory change could one day be toward the
