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Supernovae 2 - Solution
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E, then B, then A,
then C and D simultaneously,
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E, then B, then D, then
A and C simultaneously.
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A, then B, then C and E simultaneously, then D.
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B, then A, then C and E simultaneously, then D.
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The chronological order of B and D
is NOT the same in all frames of reference.
The spacetime points B and D cannot be connected by
an object or signal which travels slower than the speed of light.
They are outside of each others light-cones.
Therefore, their chronological order will depend on the frame.
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