>>12194077The only thing that stops any kind of radiation in space is distance anon.
Wavelength is decreased, if I remember correctly, by the amount of power having been put into a wave.
What I mean by this is that electromagnetic waves obey the inverse-square law. Even light does this. At double the distance, you get four times less power and so forth and that's because the wave spreads essentially like a ripple.
Radios are also relatively reliable and efficient today which is the trend for most technology, even if it took some energy to send a signal:
>the energy can be recouperated by solar panels if the rover has any>the signal won't be as hindered by atmosphere as Mars simply has a thinner one, if it send straight from the surface>the signal won't be hindered by space on the travel back as the distance is, for radio anyway, not that longEstimates are for radio waves that they become indistinguishable from background noise after a few lightyears of travel, but sending it to Earth is at best only an AU or so of travel.
Out of human radio broadcasts, normal ones can't really be picked up by the time they reach another star. But one done by a giant installation like Arceibo or High-Powered Radar can be picked up for at least a couple of light years. The signals that have reached furthest in pic related are most likely not something someone can pick up for example.
