alt Hacker NewsRadio signals do weaken and dissipate over time and space. Broadcast signals could fade into the cosmic microwave background in a few light years depending on their strength. The sci-fi trope of aliens picking up Earth tv and radio just isn't plausible.
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exe34 • yesterday at 8:27 PM
And in that light, you're worried two blocks the size of a small car will get picked up on the alien's hyperspace scanners?
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Imagine how far technology has come in 100 years. Then imagine if the alien had just a 1 million year head start to technology. 1 million years is less than 1/1000 of the age of the universe earlier.
We have literally no idea what technology the alien could have.