๐ณ๏ธโ๐๐๐ฝ
๐ณ๐ฑ
Scientist here, just a bit of a pet peve here. This isnt a good answer. Lead can form through normal processes (stellar)and doesnt require radioactive decay as its main source. In fact most lead on earth existed when the earth was formed.
I'm curious, did you see my reply on Takei's post directly, or from my page or something?
@freemo @georgetakei
I'm following George on Mastodon and just scrolled through the replies to this particular post, because I also felt the answer left much to be desired and was curious what others might have to say on that.
Thts interesting since Universeodon recently suspended our whole server in retaliation for me calling our their new moderator for abusive practices. So wouldnt have expected my replies to show.
@freemo @georgetakei
Maybe your answers don't show up on their server (universeodeon.com), and are invisible for George in consequence, but do show up on others which haven't banned yours, like mine (mastodon.online).
Never looked into how Mastodon works precisely, and whether ban lists propagate, for example.
@freemo @georgetakei
Seems so. Looking at the posts' page on George's server directly your answer appears to be missing. https://universeodon.com/@georgetakei/111936656496446905
@freemo @georgetakei But how long does the lead take to form from a stellar source?
A supernova takes course over only several weeks to a few months. So very very short time indeed by stellar standards.
@freemo @rivetgeek @georgetakei inside the star, are nuclear reactions involved in the creation of lead?
@SethBrown @freemo @georgetakei I think most of the inside of a star is nuclear reactions? That's why it's a star.
@freemo @rivetgeek @georgetakei
How long, on average, does it take a star to go nova?
From its formation as a star, as a starting point?
Do we have any idea?
@SethBrown @rivetgeek @georgetakei
Varies greatly on the mass of the star and its composition (generation).
@freemo @rivetgeek @georgetakei
Are we talking more than 4000 years, by chance?
Or is it ever possible that a star could go nova within 4000 years and spray lead across the universe?
Just to eliminate lead formation within a star as a possible source of lead on the earth, as something which could possibly have happened within 4000 years ... ?
Not always, there are types of supernova events that can happen over the course of days. For example in binary star systems that just finished forming you can have super nova events occuring due to the interaction between the stars.
That said I am not arguing that the earth is 4000 years old, only that the argument made here is invalid.
@freemo @georgetakei Yup. The proper answer is to do with the changing ratios of the decaying isotopes, but that's for somebody cleverer than me to work out.
@freemo @georgetakei I was scrolling down looking for a better answer, since the one in the original post didn't convince me either. Thanks for sharing some knowledge!
@freemo @georgetakei
My thought, not a good answer. Supernova nucleosynthesis can produce lead.