![True Shape of the Universe, Asteroid Mining, Alien Astronomers | Q&A 180 True Shape of the Universe, Asteroid Mining, Alien Astronomers | Q&A 180](https://i.ytimg.com/vi/yceFvZC4o3E/maxresdefault.jpg)
In this week's live Questions and Answers show, I provide the exact number of alien worlds that could detect the Earth, are we made of heavier elements made in other galaxies, will lasers remain perfectly parallel in space? And more... To vote for the best question just post any comment ...
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