Alohascope wrote:
Ann your illustration does not contain a date, however, at this date in history that illustration may still hold considerable power of persuasion. But, as more and more water IN earth is discovered a new model will be made as rock is of course generally denser than water .. although some rock actually floats on water, and it is possible that kind of rock will be found along with the water. What is another of my "crazy claims?"
My link was to the Wikipedia article about the Earth as a rocky planet. Alohascope, are you aware of what sort of source Wikipedia is? It is maintained and updated by thousands, tens of thousands or even hundreds of thousands of members, who are adding to the entries and articles there and taking away mistakes. There are indeed cases where large groups of members disagree on an issue, and Wikipedia entries on controversial issues may change back and forth rather substantially.
But as to whether or not the Earth is a rocky planet, the Wikipedia members who think that the Earth is not predominantly rocky make up such a tiny minority that if they try to claim that the Earth is not a rocky planet, other users will delete their additions almost instantly.
You tell me that a new model of the Earth
will be made. Well, thousands, or tens or thousands, or hundreds of thousands, or millions of Wikipedia members don't agree with you.
I don't agree with you either. Unlike you, I don't claim to know the future. But I understand enough of how scientists measure the mass and the density of the Earth to conclude that the Earth
must be made mostly of rock, otherwise its physical properties would be radically different than what we observe them to be. For example, if the Earth was predominantly made of ice and water, it would be much less massive than we know it to be.
I don't know what made the pits of Pluto. I have no idea. Like everybody else, I am amazed at this distant, incredibly diverse and active world. And while I draw some conclusions when I see some features of Pluto, I wouldn't dream of telling everyone else that I understand the processes that made these features. How would I know that? I and everybody else are seeing Pluto for the first time. How can anyone know for sure why Pluto is the way it is, at this stage?
Scientists will spend years carefully studying the images of Pluto. They will make computer models to try to work out which models work and which don't. They will slowly agree on why Pluto is the way it is.
But you are telling me that you already know what caused all sorts of features on Pluto. Your cocksureness makes a bad impression on me.
And one thing is certain: I have greater faith the scientists who slowly, laboriously work to try to make Pluto give up its secret than I have in you, and I have greater faith in thousands, or tens of thousands, or hundreds of thousands, or even millions of members of Wikipedia than I have in you.
Ann