"Kelvin wasn’t being willful .it was simply that there was nothing in physics that could explain how a body the size of the sun could burn continuously for more than a few tens of millions of years at most without exhaustion its fuel. Therefore it followed that the sun and it planets were relatively, but inescapably youthful."
I have two questions my first question is that haven't scientist proved that the world has been here for like 4.something billion years, and the sun has had to have been here for the same amount of time.
But I'm confused as to what there trying to convey in the quote above about how the sun couldn't last for tens of millions of years? is it saying there is no pyhsics to explain how the sun is there for tens of millions of years? And also isn't it hard for astronomers to study the sun because there isn't a way for us to efficiently study like go to the sun and calculate different things like we did on the moon?
"Among the questions that attracted interest in that fanatically inquisitive age was one that had puzzled people for a very long tine namely why ancient clamshells and other marine fossils were so often found on mountaintops. How on earth did they get there?"
It was also crazy how the world was once fully covered in water, and they found seashells and different things one would find underwater today on the mountain. showing proof that the water level was once that high up.
For me it is shocking because I begin to wonder where all of that water went once the sea levels began to go down and turn into what we see now as land.
Did that water disappear? If so will the water continue to disappear until there is no water left?
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