Recent content by Hildy

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    What are boson stars — and what do they have to do with dark matter?

    Question - Just as the gravity of a normal star can affect the light from a star it passes in front of, would this also be true of a boson star?
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    How President Trump could change NASA

    In general, manned missions will survive in some form and I suspect that the moon will be the target due to China. My concern is science missions. The Europa Clipper and DAVINCI will probably be cancelled entirely along with smaller deep space missions. I doubt we'll see any new non-human...
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    ‘Missing link’ black hole found? Not so fast, new study says

    While our universe is too big to discount the possibility of an intermediate sized black hole forming somewhere, it will be just a curiosity. It is time to discard the theory that the formation of super-massive, much less ultra-massive, black holes have anything to do with stellar or...
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    ‘Tragedy of the commons’ in space: We need to act now to prevent an orbital debris crisis, scientists say

    One problem that is not mentioned is parking orbits, where satellites that as decommissioned are relocated to. All satellites should be required to be designed for earth reentry and the parking orbit intact satellites should be prioritized for removal.
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    How the 'Great Filter' could explain why we haven't found intelligent aliens

    To me, two things stand out. Desire and Perspective. Desire - A galactic spanning civilization has to want to be galactic spanning. The only civilization we know of was built on conquest and colonialism. Surely other, more peaceful, civilizations arise in the cosmos who are content to stay in...
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    Russian cargo spacecraft's 'unexpected odor' delays delivery to astronauts on ISS

    Given the status of the Russian space program, I would guess that somebody used a paint rattle can to cover up a scratch.
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    Perseverance rover watches 'googly eye' solar eclipse from Mars (video)

    Does Deimos's orbit allow for a much smaller eclipse as well?
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    What happens when black holes merge?

    Out of curiosity, do any of the last parsec simulations include the possible influence of dark energy or dark matter?
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    Weird striped rock 'unlike any seen on Mars' found by Perseverance rover. Here's why NASA's excited

    Keep in mind that it would have been subjected to thousands or millions of years of weathering by Martian dust.
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    Weird striped rock 'unlike any seen on Mars' found by Perseverance rover. Here's why NASA's excited

    Interesting, if true, but ISTM that the Occam's Razor explanation is that it's an Earth meteorite.
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    Are we alone? Intelligent aliens may be rare, new study suggests

    We already know, for certain, that we are not alone. Octopuses are certainly intelligent but would be undetectable on another planet. Their short life spans do present a barrier to civilizations but with a longer life an aquatic civilization is not out of the question. Even if we limit it to...
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    Best AI movies of all time

    You need to include the seminal AI film - War Games. "Shall We Play a Game?"
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    'The Expanse' Season 5 premiere reminds us what makes quality, cerebral sci-fi

    What really makes quality, cerebral sci-fi TV or movies is a good book or book series and The Expanse is a certainly that. It does present a problem to readers who become viewers because we know what should happen next. I'll I've got to say is that you're in for a wild ride.
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    1st Methane, Now Oxygen: Another Possible 'Biosignature' Gas Is Acting Weird on Mars

    While SETI should use the default "not alien" in its results, it seems irrational to denigrate the possibility of extraterrestrial microbial life on Mars (or anywhere else). It should be remembered that the Viking LR experiment yielded results that showed the existence of biological activities...