Torbjorn Larsson

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    Torbjorn Larsson replied to the thread DNA-busting radiation from star-killing supernova could have influenced evolution on Earth.

    Nothing is "specified" (specification) in evolution, but there is speciation (species divergencies). Hominins (Panina, Homonina) started...

    Mar 9, 2025
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    Torbjorn Larsson reacted to Unclear Engineer's post in the thread DNA-busting radiation from star-killing supernova could have influenced evolution on Earth with Like.

    The trouble with the statistical "correlation" is that the people who already had an event time for a supernova went looking for any...

    Mar 9, 2025
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    Torbjorn Larsson replied to the thread DNA-busting radiation from star-killing supernova could have influenced evolution on Earth.

    Apparently the paper was. The association is spurious. From one paper that address viral radiation and clearly ties it to the...

    Mar 9, 2025
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    Torbjorn Larsson replied to the thread How did Andromeda's dwarf galaxies form? Hubble Telescope finds more questions than answers.

    Their series of references dips back to the original plane discovery paper to point out a recent upset as a potential culprit...

    Mar 9, 2025
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    Torbjorn Larsson replied to the thread NASA switches off Voyager instruments to extend life of the two interstellar spacecraft 'Every day could be our last..

    Still going. The magnetic field and plasma wave instruments are still collecting useful trans-heliosphere interstellar space data...

    Mar 8, 2025
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    Torbjorn Larsson reacted to billslugg's post in the thread NASA switches off Voyager instruments to extend life of the two interstellar spacecraft 'Every day could be our last. with Like.

    A trailing wire that generated power by crossing the local magnetic field would slow the craft. Some slowing might be acceptable...

    Mar 8, 2025
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    Torbjorn Larsson replied to the thread NASA supercomputer finds billions of comets mimicking the Milky Way's shape: 'The universe seems to like spirals!.

    I very much agree with the general comment. Solar radiation has order of magnitude more free energy potential fluxes, which is why land...

    Mar 2, 2025
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    Torbjorn Larsson replied to the thread NASA supercomputer finds billions of comets mimicking the Milky Way's shape: 'The universe seems to like spirals!.

    The results are not based on fluid dynamics of e.g. general relativistic simplified models or classical physics models of viscous...

    Mar 2, 2025
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    Torbjorn Larsson reacted to contrarian's post in the thread NASA supercomputer finds billions of comets mimicking the Milky Way's shape: 'The universe seems to like spirals! with Like.

    If this refers to continuous production of H2S, keep in mind that this compound is toxic to a lot of higher life forms. It seems...

    Mar 2, 2025
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    Torbjorn Larsson replied to the thread NASA supercomputer finds billions of comets mimicking the Milky Way's shape: 'The universe seems to like spirals!.

    Interesting outcome of the solar system orbital ecliptic plane being so tilted against the galactic plane, it sets up Kosai cycles that...

    Mar 2, 2025
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    Torbjorn Larsson reacted to billslugg's post in the thread NASA supercomputer finds billions of comets mimicking the Milky Way's shape: 'The universe seems to like spirals! with Like.

    They didn't "discover" anything, they predicted something. They did a simulation and got a spiral in the computer. They will now figure...

    Mar 2, 2025
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    Torbjorn Larsson replied to the thread 1st private spacecraft to attempt to travel beyond the moon appears to be in trouble.

    It seems this refers to Odin: https://www.astroforge.com/updates/mission-2-preview First, let me note (why this was unclear and) that...

    Mar 1, 2025
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    Torbjorn Larsson replied to the thread NASA's Curiosity Mars rover discovers evidence of ripples from an ancient Red Planet lake (images).

    Interesting, as they see individual extended periods of waves in about 100 m of wind deposited strata, suggesting a long period of ice...

    Feb 23, 2025
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    Torbjorn Larsson replied to the thread Some baby stars in ancient stellar nurseries were born in 'fluffy' cosmic blankets.

    This looks an unexplained fact although spurious: ""We found that about 60% of the molecular clouds we observed had a filamentary...

    Feb 23, 2025
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    Torbjorn Larsson replied to the thread Black holes snacking on small stars create particle accelerators that bombard Earth with cosmic rays.

    This could be one type of cosmic ray source. Another proposed source could dominate the cosmic rays, at least at high energies...

    Feb 23, 2025

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