astronomy

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AbouBenAdhem, w Scientists hail ‘strongest evidence’ so far for life beyond our solar system

My theory is that the inhabitants of K2-18b are deliberately flooding their atmosphere with dimethyl sulfide to make it unappealing to humans.

HylicManoeuvre, w NASA Shuts Off Voyager Science Instrument, More Power Cuts Ahead to Keep Both Probes Going
@HylicManoeuvre@mander.xyz avatar

Oh noo I’m literally using Voyager to browse Lemmy

5714, w 'It's extremely worrisome.' NASA's James Webb Space Telescope faces potential 20% budget cut just 4 years after launch

Fermi- MAGA-Paradox

fallowseed, w Euclid reveals an Einstein ring around a nearby galaxy

‘nearby’ … speaking of relativity.

Greyghoster, w NASA Ordered to Remove Anything About 'Women in Leadership' From Its Websites: Report

The sad thing is that this was all telegraphed and baked into the platform. If people are kicking themselves now, it’s too late.

anindefinitearticle, w NASA Ordered to Remove Anything About 'Women in Leadership' From Its Websites: Report

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  • Eyekaytee,
    @Eyekaytee@aussie.zone avatar

    Those numbers are interesting but what is the result of this? eg. because NASA has approximately 35% women and 30% minorities, it has what level of increased productivity? what has actually come out of this?

    atro_city, w Astronomers seek global ban on space advertising

    We won't stop polluting until the world is unlivable. Gotta love humanity.

    oce, w A NASA astronaut may have just taken the best photo from space—ever
    @oce@jlai.lu avatar
    lemming, w Dark Matter Black Holes Could Fly through the Solar System Once a Decade

    I thought these were disproved by lack of gravitational microlensing?

    InvertedParallax,

    The main way you’d see that kind of microlensing is if they aggregated.

    But given the way gravity works, they should aggregate, otherwise why call them black holes?

    Classy,

    If they were relatively evenly distributed would that counteract lensing?

    InvertedParallax,

    Yes, it would just be surprising because, gravity should make them not be evenly distributed.

    The whole thing with dark matter is that it’s this magic stuff that causes gravity but isn’t affected by it, which… is not how gravity normally works.

    Though there is still room for it, we just need a better framework other than “I added 3 and 5 and got 12, so obviously I must mean to add 3 and 5 and 4 too”.

    MartianSands,

    You’re mistaken. Dark matter, whatever it is, isn’t affected by anything except gravity. It interacts with gravity just like “normal” matter.

    The evidence is also significantly better than you’re describing

    InvertedParallax,

    Then it should also coelescce, particularly since it doesn’t have the em force to keep it repelled, the universe should be dominated by massive dark matter black holes.

    Yes, there’s math that explains part of the distribution, but also there is 0 force opposing any collapse we’d have a lot more neutron stars and other degenerate matter catalyzed by dark matter.

    We have hypotheses like this when our observations don’t make sense and we need to explain them, it’s definitely a possibility but we still have room to understand the large scale physics at play.

    MartianSands,

    You don’t need a force to prevent collapse if there’s no drag force to slow things down. It would actually be almost impossible for a cloud of dark matter to collapse since any individual particle has momentum and no way to slow down, so they’ll all be in some sort of mutual orbit

    InvertedParallax,

    I’m guessing you’ve seen as many lorentz attractor simulations as I have, what always happens is something like tidal effects or angular momentum means 90% slow down while a few particles get shot out of hell at ludicrous speed.

    The effect is similar to drag, and is basically how we get entropy even without em effects.

    PennyRoyal, w Starlink is increasingly interfering with astronomy, scientists say

    It’s not the only problem with them, and potentially not the biggest either - there is no plan to remove or maintain them when they die other than de-orbiting them into the upper atmosphere. A recent study suggests that this will critically harm the ozone layer, and that adding metallic particles in the quantities implied by the number of starlink satellites that Elmo plans to launch could do far more damage to the ozone layer than our previous attempts to screw it up!

    Article - sciencealert.com/satellites-like-starlink-could-p…

    Study - agupubs.onlinelibrary.wiley.com/…/2024GL109280

    threelonmusketeers,

    Yeah, aluminium oxide particles may be a problem. Some scientists are experimenting with replacing aluminium with wood. I wonder if this would be feasible on future Starlink sats.

    Thordros, w Elon Musk destroys astronomy
    @Thordros@hexbear.net avatar

    Still love the truck tho

    featured,

    Lmao

    Zier, w Size Comparison: Pluto and Australia
    @Zier@fedia.io avatar

    As a former Plutonian, I can confirm it's small, that's why we immigrated to Earth. And fucking cold!

    samus12345,
    @samus12345@lemmy.world avatar
    Zier,
    @Zier@fedia.io avatar

    Stop posting pictures of my family, they are very shy!!!

    nnullzz, w OP: "This is my most advance moon photograph EVER it consist of 81000 images and over 708GB of data." (see comments.)

    With all the impacts the moon seems to take, is there any footage of a new crater being made? That would be super cool to see.

    Feathercrown,

    Here you go! First time seeing this footage myself!

    youtu.be/000iTCoEE1s?si=mKO_1XCDVLYS-Yqk

    I seem to recall a story about a large impact visible to Europe from Earth sometime around the renaissance as well, but I couldn’t find it.

    nnullzz,

    Oh wow! Thanks for sharing!

    Fizz, w OP: "This is my most advance moon photograph EVER it consist of 81000 images and over 708GB of data." (see comments.)
    @Fizz@lemmy.nz avatar

    Fuck that looks crisp

    padjakkels, w The sun's magnetic field is about to flip. Here's what to expect.
    @padjakkels@lemmy.world avatar

    That title is click bait

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