kjpmi t1_jcc8aiv wrote

You can test your furnace air filter after it has been collecting dust for a while, with a Geiger counter with the right probe.
Even if you don’t have a radon problem, you will detect a slightly higher decay count compared to background.


kjpmi t1_j6gmeov wrote

>Sentinelese islands

It’s just one island that they live on. North Sentinel Island.
The rest of the islands are the Andaman and Nicobar islands.

There are other modern peoples inhabiting the other islands.


kjpmi t1_j1v2k14 wrote

The odds that an intelligent alien race could even intercept it are remote. Think about Omouamua (however you spell that). Chances are an intelligent race wouldn’t detect the Voyager crafts AND be able to realize that they might not be natural until well after they were millions and millions of miles past their planet.