“The scientists have proposed that these life-bearing planets”
“Has any evidence been presented at all that they are life-bearing? So far we are 0-for-2 on detection of microscopic life on extraterrestrial bodies (moon and Mars) and zero for a lot more for detection of macroscopic life where we get close enough to various planets and moons to take detailed pictures of them.”
That is somewhat like landing on a beach in the Bahamas, measuring off one square foot of the beach sand, searching for an African elephant in that one square foot of beach sand and finding none, declaring there must be no African elephants in Africa because you have not yet found an elephant in the one sqaure foot of beach sand you searched in the Bahamas!
“originated in the early Universe within a few million years of the Big Bang,”
“For a planet to be anything other than a gas giant like Jupiter, there have to be elements heavier than hydrogen and helium. I don't know when the first stars when supernova, but the planets would have had to have formed after than to have any chance to have carbon, nitrogen, oxygen or even heavier elements like silicon or iron in them.”
The first stars formed very quickly and often with vast supplies of matter to form a great many super-giant and hyper-giant Population I stars. These overly massive stars have correspondingly far shorter life spans and tend to supernova or hypernova in as little as a half-million years to a few million years. The super-massive stars which hypernova in particular catastrophically explode after they begin fusing iron in their cores. So, it is not only likely that a considerable number of rogue planets with heavy elements could have formed so early, it almost a certainty that they did so. Nonetheless, the existence of heavy element enriching novae does not indicate the overall balance of the stellar and planetary bodies were correspondingly rich with heavy elements as today, but does imply they did exist in substantial numbers even in the earliest periods.
“and that they make up most of the so-called “missing mass” of galaxies.”
“I've seen estimates that up to 90% of the mass is “missing”. Since Jupiter is about one one-thousandth of the mass of the sun, that means you would need ten thousand missing Jupiter size planets for every sun sized star to account for the mass this way.”
Intergalactic space dwarfs intra-galactic spaces, and non-luminous planetary bodies have much greater chances of forming in regions where the density of matter was insufficient to form the mass needed for the formation of luminous stars.
“and during each transit, zodiacal dust, including a component of the solar system’s living cells,”
“What living cells? Have we ever found even one extraterrestrial cell? Just one? Then why is it assumed that they exist?”
Organic molecules are found to be present throughout interstellar space, and we know that self-replicating organic molecules have a natural tendency to form within organic rich media. The chances of this common chemical reaction being absent within the trillions upon trillions of planets and planetoid environments appears to be virtually impossible.
Which is just a little bit better science than looking at that same one square foot of sand and declaring that there must be elephants in Africa.
The first stars formed very quickly and often with vast supplies of matter to form a great many super-giant and hyper-giant Population I stars. These overly massive stars have correspondingly far shorter life spans and tend to supernova or hypernova in as little as a half-million years to a few million years.
Thanks. Like I said, I didn't know how long those would take so I didn't know if the original population I stars would have had their first supernovas yet.
. The chances of this common chemical reaction being absent within the trillions upon trillions of planets and planetoid environments appears to be virtually impossible.
There is a huge gap between absent everywhere and present everywhere. The author stated that life would be present everywhere with no evidence.
I had a professor who told his class that you can have one unproven speculation in a paper. If you put in more you might as well be writing a sci fi story. This story had a bunch of those speculations asserted as facts. I'll leave that for Art Bell.