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"We're going to be going into an orbit almost right away that is 40,000 miles out - like a fifth of the way of the Moon," Koch told BBC News.
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But a robot vacuum is the only kind of device that regularly roves around your home. That gives this vulnerability a unique sense of foreboding, perhaps enough to provide the plot to a found footage horror film.
In some cases, alternative gelling agents might provide faster results. Researchers observed that bacterial cellulose and another bacterial polysaccharide, Eladium, allow a 50 percent increased growth rate for various bacteria and yeasts (as compared to their growth on agar), including higher biomass yields or faster detectable biofilm formation. However, both substances are still not as cheap and readily available as agar.