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Rocket Propulsion in Empty Space - I

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Related Experiment Video

Updated: May 3, 2026

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

Published on: February 16, 2019

Gravitational tractor for towing asteroids.

Edward T Lu¹, Stanley G Love

¹NASA Johnson Space Center, Mail Code CB, Houston, Texas 77058, USA. edward.t.lu@nasa.gov

|November 11, 2005

Summary

This summary is machine-generated.

A novel spacecraft design uses gravity to tow asteroids, altering their trajectory to protect Earth. This method is robust, unaffected by asteroid composition or rotation, offering a reliable planetary defense strategy.

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Related Experiment Videos

Last Updated: May 3, 2026

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

Optimization, Test and Diagnostics of Miniaturized Hall Thrusters

Published on: February 16, 2019

Mimicking a Space Mission to Mars Using Hindlimb Unloading and Partial Weight Bearing in Rats

Mimicking a Space Mission to Mars Using Hindlimb Unloading and Partial Weight Bearing in Rats

Published on: April 4, 2019

Design and Use of an Apparatus for Presenting Graspable Objects in 3D Workspace

Design and Use of an Apparatus for Presenting Graspable Objects in 3D Workspace

Published on: August 8, 2019

Area of Science:

Planetary Science
Aerospace Engineering
Astrodynamics

Background:

Asteroid impacts pose a significant threat to Earth.
Current asteroid deflection methods have limitations regarding asteroid properties.

Purpose of the Study:

To propose a novel spacecraft design concept for asteroid trajectory alteration.
To present a gravity-based towline method for planetary defense.

Main Methods:

A spacecraft hovers near the asteroid, utilizing its gravitational pull.
Thruster exhaust is directed outward to avoid surface interaction.
The method is designed to be independent of asteroid physical characteristics.

Main Results:

The proposed method offers controllable trajectory alteration.
The design is insensitive to asteroid structure, surface properties, and rotation state.
This approach provides a robust planetary defense solution.

Conclusions:

The gravity towline spacecraft concept presents a viable and adaptable strategy for asteroid deflection.
This innovative approach enhances planetary defense capabilities against potential impact threats.