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Originally posted by ExCloud
I have a question I can't seam to find an answer to. I've read what kind of star ours is etc, but how are we sure our sun isn't already in the shrinking faze of its life?
Originally posted by ExCloud
I have a question I can't seam to find an answer to. I've read what kind of star ours is etc, but how are we sure our sun isn't already in the shrinking faze of its life? Mars seaman like it could have or did maybe have life at one time or another(not saying intelligent). How do we know ours isn't going white dwarf? Help answers please.
Originally posted by emberscott
No one can answer that question. Because no one knows. Everything is a theory. A best guess. Just have to deal with it.
Originally posted by ExCloud
I have a question I can't seam to find an answer to. I've read what kind of star ours is etc, but how are we sure our sun isn't already in the shrinking faze of its life? Mars seaman like it could have or did maybe have life at one time or another(not saying intelligent). How do we know ours isn't going white dwarf? Help answers please.
That is odd. I can only guess how that word got there.
Originally posted by emberscott
No one can answer that question. Because no one knows. Everything is a theory. A best guess. Just have to deal with it.
A scientific theory is "a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment."...
Scientific theories are the most reliable, rigorous, and comprehensive form of scientific knowledge. This is significantly different from the word "theory" in common usage, which implies that something is unproven or speculative.
Originally posted by ExCloud
reply to post by Saint Exupery
I get this, but how are we sure this is correct. We know the earth is expanding. We know the sun is heating up. We know Mars has some form of water. We know titan has oceans. Even with this how do we know our sun isn't shrinking? In my opinion as you release gas and solar flares you get smaller.
Nucleocosmochronology, also known as cosmochronology, is a relatively new technique used to determine timescales for astrophysical objects and events. This technique employs the abundances of heavy radioactive nuclides to calculate the age of formation of astronomical objects in a similar fashion to the dating of rocks in the field of geochronology. Nucleocosmochronology has already been successfully employed to determine the age of the Sun (4.57±0.02 billion years) and of the Galactic thin disk (8.8±1.8×109 y), among others. It has also been used to estimate the age of the Milky Way itself, as exemplified by recent study of Cayrel's Star in the Galactic halo. Limiting factors in its precision are the quality of observations of faint stars, and perhaps more importantly, the uncertainty of the primordial abundances of r-process elements.
Originally posted by emberscott
No one can answer that question. Because no one knows. Everything is a theory. A best guess. Just have to deal with it.