---
title: "This Mini Ion Thruster Is Adorably Tiny"
description: "Scientists at the European Space Agency have created a tiny miniaturized ion thruster that's capable of keeping a satellite steady while in Earth's orbit."
date: "2020-05-29"
modified: "2020-05-29"
authors:
  - name: "Victor Tangermann"
    job_title: "Senior Editor"
    link: "https://futurism.com/authors/victor"
url: "https://futurism.com/the-byte/mini-ion-thruster-adorably-tiny"
categories:
  - "Space"
tags:
  - "bepicolombo"
  - "ESA"
  - "european space agency"
  - "ion thruster"
  - "the digest"
---

# This Mini Ion Thruster Is Adorably Tiny

![Scientists at the European Space Agency have created a tiny miniaturized ion thruster that's capable of keeping a satellite steady while in Earth's orbit.](<https://futurism.com/wp-content/uploads/2020/05/tiny-ion-thruster-adorable.jpg>)
*\<em\>Image: ESA\</em\>*

## Ion Maiden

Scientists at the European Space Agency [have created](<https://www.esa.int/Enabling_Support/Space_Engineering_Technology/Tiny_crown_at_heart_of_miniature_space_thruster>) a miniaturized ion thruster that's capable of keeping a satellite steady while in Earth's orbit.

Liquid metal forming on a tiny spiked crown made of tungsten generates an electric field and shoots out positively charged ions, providing thrust. The crown is made up of 28 tiny needles and is just a single centimeter in diameter, less than half the diameter of a quarter.

It's adorable, right?

https://youtu.be/GbHPwjyLXjA

## Tiny Power

Its performance is equally microscopic, only generating anywhere between 10 to 400 micronewtons — a tiny fraction of the power of a toy rocket.

But in space, even that low amount of power can allow satellites to hold their positions, and even gradually deorbit to make sure they're out of harm's way and don't become space debris.

## To Mercury and Beyond

On the opposite end of the spectrum, a European-Japanese ion thruster used for the Mercury-bound spacecraft BepiColombo [broke the record](<https://futurism.com/most-powerful-ion-drive-ever-blast-spacecraft-mercury>) for the most powerful ion thruster in 2018. Its performance tops out at a maximum combined 290 millinewtons (290,000 micronewtons).

But even then, back on Earth, the forces involved are pretty underwhelming. A [statement by the ESA](<http://www.esa.int/Our_Activities/Operations/BepiColombo_now_firing_on_all_cylinders>) at the time compared full throttle from one of BepiColombo's two thrusters to the force of "holding an AAA battery at sea level."

In the microgravity of space, however, things look a little different.

**READ MORE:** [Tiny crown at heart of miniature space thruster](<https://www.esa.int/Enabling_Support/Space_Engineering_Technology/Tiny_crown_at_heart_of_miniature_space_thruster>) \[The European Space Agency\]

**More on ion thrusters:** *[The European Space Agency’s New Ion Thruster “Breathes” Air](<https://futurism.com/esa-ion-thruster-breathes-air>)*

## Author
I've been at Futurism since 2017, where my role has evolved to encompass design, writing, and increasingly editing. I've always been fascinated by space exploration and advanced transportation, which I've leaned into by interviewing luminaries in those fields while closely following the dimensions of policy and regulation that allow next-generation projects to succeed -- or, sometimes, to fail. I'm also keenly interested in the effects of generative AI on society, policies, and democratic institutions, as well as clean energy, physics and biology, and the vagaries of tech leadership. My work for Futurism has been cited by publications including Ars Technica, Gizmodo, PC Magazine, Jalopnik, Fox News, and the New York Post. I spent my childhood living in locations including Manila, the Philippines, and Geneva, Switzerland, attended McGill University, and now live in Toronto, Canada. Before Futurism I worked at AskMen and a small photography studio. In my free time, I'm an avid gardener, foodie, and craft beer lover, as well as a maker of artisanal hot pepper sauces. I have a magnificent dog named Freida.

### Author social links  
[Bluesky](<https://bsky.app/profile/vtanger.bsky.social>)