Electronics super-noob here! (I did EE in school but have managed to forget practically everything since, to an alarming degree!).

I'm wondering how the field of electrical engineering and electronics would be affected if humans, say, colonized any of the planets that have no magnetic fields? I understand that without a magnetic field in the atmosphere, humans would be more easily exposed to harmful radiation. As far as technology goes, how would things be affected?

You can still created magnetic fields in space by creating moving electric fields, right? Would normal electro-mechanic forces works the same way? Is there any consequence for radio technology or satellites? Obviously, humans have sent probes into the vacuum of space that send data back, so I understand that it works, but I'm curious if there's any different considerations.

What technology would stop working on a planet with no magnetic field (besides compasses)?

  • \$\begingroup\$ They'd be fine, except for compasses. \$\endgroup\$ Commented Sep 7, 2020 at 18:51
  • \$\begingroup\$ @user253751 Why? \$\endgroup\$ Commented Sep 7, 2020 at 18:52
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    \$\begingroup\$ @user253751 They would be fine. If radiation-hardened. Or am I missing something? \$\endgroup\$ Commented Sep 7, 2020 at 19:07
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    \$\begingroup\$ @Andyaka Stationary iron does not produce magnetic fields, does it? \$\endgroup\$ Commented Sep 7, 2020 at 19:44
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    \$\begingroup\$ No, I'm done with this and it isn't an EE themed subject anymore. \$\endgroup\$
    – Andy aka
    Commented Sep 8, 2020 at 7:27

2 Answers 2


There are quite a few man-made electronic devices attached/landed on celestial object with weak/almost no magnetic field, both operational and deprecated. The celestial object include, but are not limited to Mars, Moon, Venus, Titan, few asteroids, as well as a number of satelites and probes that are just floating in space with no external source of magnetic fields other than the far-away Sun.

No problem. Everything works as expected in regard to the magnetic fields.

Then again, the Earth's magnetic field can be quite useful in some unexpected manners. For example, some satelites use it to generate torque for attitude control


All planets have magnetic fields, with out this field the planet would soon lose it's orbit, such as a asteroid, or meteoroid and go crashing off on its own course. A molten core is not required to generate a magnetic field in a planet. Thru out all of space there is a duality of a light matrix that pass thru all objects, creating to a greater or lesser degree in these objects a magnetic field. There by giving a harmonic order to groups and systems in space.

All planet’s magnetic fields also create its own time-domain, this varies according a planets size, age, atmosphere, etc. Early on NASA was perplexed by their Satellites arriving early or later then they should have been. Their calculations were off because it was based on Earth’s time-domain and not the approaching planet. We Human being are just getting started understanding the Cosmos.

  • \$\begingroup\$ How would the lack of a magnetic field affect a planet's orbit which is based on gravitational forces? See Not all planets have magnetic fields. \$\endgroup\$
    – Transistor
    Commented Sep 13, 2020 at 19:54
  • \$\begingroup\$ "light matrix", "harmonic order", "create its own time-domain". This smells like some new-age goop-like original theory. -1 \$\endgroup\$ Commented Sep 13, 2020 at 22:15

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