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Miro is pretty fearless. Although he did get a bit upset when he heard today that our Milkyway is going to crash into the Andromeda galaxy in about 3.75 billion years and broke into tears.

This video does appear to indicate that the collision wouldn't destroy our solar system.

Was he scared or was he sad? He has no reason to be scared of the event, but I can understand being saddened by it, such a massive event that will change the look of the sky, potentially destroy the solar system we call home, (I'm less optimistic than your video,) and the fact we probably won't be around to see it?

It makes me sad at least.

A seven-year-old is not likely to understand the timescales involved.

Likely? No. But its certainly possible, and I do not know the child, so I can not make an assumption.

Heh, I think he needs to be explained how just long a period of time 3.75 billion years is. He knows division and multiplication? You could try to explain it to him using a comparison of a ratio of distances anyone can understand. For example, the the 1000 km or so distance to your relatives in Lapland is about one billion millimetres. An insect lover, I'm sure Miro knows many insects that are about one millimetre in size. You could tell him that one billion is such a large number that you must have a billion of those 1 mm sized insects to form a line from your home to Lapland.

He's 'fast and furious' that's why he thinks 3.75 billion years will pass soon. :D

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