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we live in an explosion
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this post was submitted on 14 Apr 2024
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https://astronomy.stackexchange.com/questions/33514/how-fast-are-we-moving-relative-to-the-cmb#33515
Earth moves with somewhere between 230-500km/s, long term average should be 370 km/s
https://en.m.wikipedia.org/wiki/Formation_and_evolution_of_the_Solar_System
https://en.m.wikipedia.org/wiki/History_of_Earth
The solar system and earth formed 4.6 billion years ago.
https://numbat.dev/?q=370+km%2Fs+*+4.6+billion+years+-%3E+ly%E2%8F%8E
That means the solar system travelled 3.45-7.67 million light-years (5.67 for the average speed) since then.
That plural form (millions of light years) is borderline, but actually not incorrect.