r/Damnthatsinteresting • • 13h ago

Video Earth’s evolution measured in galactic years.

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u/Flying_Dutchman92 12h ago

We can calculate orbits and locations in 3-dimensional space. We do this all the time, from satellites to local planets. This is no different, just larger (time)scales.

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u/YouClutchh 12h ago

Those assume that things are always the way they are during our time, who’s to say that things weren’t drastically different 100 million years ago

With how easily the world recovers from natural disasters and man-made events, it’s not that hard to think that the universe could easily recover from crazy changes over the course of millions of years… We know nothing, we speculate and theorize, we can prove none of this, regardless of models, AI, or time scales

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u/Esilai 12h ago

We can outright measure the speed of things orbiting the galactic center using Doppler Shift. We can also see stellar remnants and solar systems in various stages of formation, so we have a fairly accurate picture of what the life of a star looks like. “We have no way of knowing” isn’t an argument. More of a tell that you don’t know anything about this field.

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u/YouClutchh 12h ago

But again, alot of it is speculative… When we’re looking in the rear view mirror, especially that far, there’s a lot of if thens that go into the conclusion. This is fact, yall just don’t like it.

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u/Esilai 12h ago

We’re not speculating the entire field of astronomy. We can visually see things. We have hard measurements. That isn’t guesswork. You appear to have zero understanding of how modern astronomy works. You just don’t seem to like that people know more than you in a given subject.