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Volume

The Gravity Tractor

Mastering Subtle Gravitational Pull for Planetary Defense

A silent guardian is moving mountains in the void of space.

Strategic Objectives

• Master the delicate physics of mutual gravitational attraction.

• Understand long-term orbital station-keeping and precision station-keeping.

• Learn to navigate the complex 'n-body' environments of deep space.

• Discover the engineering behind ion propulsion and persistent low-thrust.

The Core Challenge

Kinetic impactors are violent and unpredictable, potentially shattering a threatening asteroid rather than diverting it.

01

The Invisible Tether

02

Sentinels of the Solar System

03

The Law of Universal Attraction

04

Navigating the Cosmic Dance

05

The Engine of Persistence

06

Mapping the Mass

07

Precision Proximity

08

The Sway of the Sun

09

Non-Keplerian Paths

10

The Rubble Pile Problem

11

The Center of Influence

12

The Chaos of Three

13

Measuring the Shift

14

Spacecraft Autonomy

15

Exhaust Contamination

16

The Yarkovsky Effect

17

Powering the Tug

18

Small Body Geophysics

19

Keyhole Avoidance

20

The Planetary Defense Network

21

Future Horizons

Available eBook Editions