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One small problem: Moon is the gigantic EM recorder. It recorded every EM wave from Earth. Most of them are just lighting strikes, but some of them are interest
by v_lisivka 8y ago
One small problem: Moon is the gigantic EM recorder. It recorded every EM wave from Earth. Most of them are just lighting strikes, but some of them are interesting, radio transmissions, for example. They are very weak, but antenna is huge. We may be able to restore these recordings in (far) future, so we should preserve at least 1/4 of visible Moon for future archaeology.
- aiyodev 8y agoI haven’t heard this before. Where can I read more about it?
- v_lisivka 8y agoI haven’t heard this before too, but Moon constantly bombarded with charged particles, and charged particles are affected by EM waves, including signal from Earth, so EM signal from Earth (and other sources) leaves trail in Moon dust. Extremely weak signal, of course, but Moon surface is huge. Moon covers 0.2 deg^2 of the sky: not bad. Also, few tons of dust is regularly drops on Moon, so it dust layer thickness increases with time, thus old recordings are affected less by radiation. Technology to recover these recording is not invented yet, but if we will have trails of every high energy particle in the Moon dust and powerful enough computer, we will be able to recover them.