Recent content by Unclear Engineer

  1. U

    Astronomers discover ultrapowerful black hole jet as bright as 10 trillion suns lit by Big Bang's afterglow

    This claim of "lit by Big Bang's afterglow" seems pretty far fetched. "Back when these jets formed, the CMB was far denser than it is today, filling space with a sea of low-energy photons. As electrons in the jets raced outward at near light speed, they slammed into these CMB photons, boosting...
  2. U

    JWST spies frigid alien world on bizarre orbit: 'One of the coldest, oldest and faintest planets that we've imaged to date

    So, maybe our solar system has a "planet 9" in some sort of highly oblique "polar" orbit around our Sun? That would sure make it hard to find from here.
  3. U

    Astronomers see the 1st stars dispel darkness 13 billion years ago at 'Cosmic Dawn

    Here is an article that makes more sense, and also mentions a simulation for at least the end of the "dark ages" to make comparisons with observations. https://phys.org/news/2025-06-hours-square-kilometer-array-cosmic.html But, I am still looking for a simulation that goes back to the supposed...
  4. U

    European Space Agency reveals 3 key space missions threatened by Trump's NASA budget cuts

    For technological reliability, China would be the obvious choice. Not so sure about the geopolitical reliability.
  5. U

    Supernovas may have triggered life-threatening changes in ancient Earth's climate. Scientists say it could happen again

    It would be a much more informative article if it included some information about the coincidences of those 11 spikes in tree ring C-14 with (1) climate and/or species effect events from geology and paleontology, and (2) observable supernova remnants within something like 100 light years or a...
  6. U

    Astronomers see the 1st stars dispel darkness 13 billion years ago at 'Cosmic Dawn

    But redshift and lower density did not happen faster than light can be absorbed. And from what I have read, the CMBR frequency distribution looks like red-shift black body radiation rather than red shifted absorption and emission lines for the various forms of hydrogen. It just strikes me as a...
  7. U

    Astronomers see the 1st stars dispel darkness 13 billion years ago at 'Cosmic Dawn

    One of the things that bothers me about explanations like the one in Helio's link is that somehow, the CMBR that supposedly was emitted when neutral hydrogen was formed made it through that "opaque" dense hydrogen that was present in the "dark ages" supposedly created by the neutral hydrogen...
  8. U

    Astronomers see the 1st stars dispel darkness 13 billion years ago at 'Cosmic Dawn

    If that was "AI", then it is short for "Automated Incompetence". And, it seems incredible that any journalist, or editor, would simply trust "AI" to do their jobs for them, without even proof reading the output! Maybe the basic problem is that the "AI" developers are "training" their products...
  9. U

    Astronomers see the 1st stars dispel darkness 13 billion years ago at 'Cosmic Dawn

    This article is a mess! It states: "Suddenly, photons were free to travel unimpeded through the cosmos as the universe instantly went from transparent to opaque. This "first light" is seen today as the CMB." With statements like that, the article loses all credibility. Please note that the...
  10. U

    A hidden 'super-Earth' exoplanet is dipping in and out of its habitable zone

    I am still looking at the detection bias issue. Helio's table isn't much help, because so few of the planets around type G stars have diameters listed. But, from what is there, it still looks like we are much better at detecting large planets than small ones. I would not be confident in...
  11. U

    A hidden 'super-Earth' exoplanet is dipping in and out of its habitable zone

    So, for the 99 planets orbiting the type G stars within their habitable zones, what is the planets' size distribution?
  12. U

    A hidden 'super-Earth' exoplanet is dipping in and out of its habitable zone

    I don't think we can say "Our solar system is clearly not the norm configuration." We have methods of detection that favor finding large planets orbiting close to small stars. That is why in my previous post that I asked you to sort first for Sun-like stars, then sort for planets that are...
  13. U

    A hidden 'super-Earth' exoplanet is dipping in and out of its habitable zone

    There is still a lot of observation capability bias in our list of exoplanets. Heavy planets close to small stars are easiest to detect. If we limit the list to stars similar to the Sun, how many planets between 0.75 and 1.5 AU have we detected around those? (Roughly Venus to Mars distances.)
  14. U

    NASA raises the odds that an asteroid could hit the moon in 2032

    With the current situation at NASA, I am not confident we will have any seismometers on the Moon in the near future. We might not even be able to plan for them before 2028, and any there now might be turned off soon. And, as we have seen with recent landing attempts, getting instrument...
  15. U

    There's an infinite amount of energy locked in the vacuum of space-time. Could we ever use it?

    From Helio's link: "The treatment of boundary conditions in these calculations is controversial. In fact, "Casimir's original goal was to compute the van der Waals force between polarizable molecules" of the conductive plates. Thus it can be interpreted without any reference to the zero-point...