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  1. American here – I’m going solar in a week or two. Can I have a smaller coal equivalent please?

  2. I find it hard to believe that the Kuiper Belt consist of less mass than Earth.

  3. Is this for sale as a bound book anywhere? I would buy a book like this for my niece and nephew in a heartbeat.

  4. Consistent_Agency833 on

    What would actually happen if all the Galaxy’s uranium were put together like that?