When and where will the next manhole explosion be? Bonus question: Why are manholes (or is that menhole?) round?
Why is a Black hole emitting a giant gas bubble 1000 light-years wide? Bonus question: How can anything in a vacuum be called a "bubble"?
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Why is a Black hole emitting a giant gas bubble 1000 light-years wide? Bonus question: How can anything in a vacuum be called a "bubble"?
Read the comments on this post...
More...