The Space Thread -

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  • audioluvr
    audioluvr Posts: 4,628
    edited June 2022
    Tony M wrote: »
    I still think when we look through a powerful telescope, we're seeing WHAT IS THERE AT THAT MOMENT.
    Just a belief I have personally.

    Does a photon of light travel "forever" in a straight line? Light can be bent by the gravitational force of another object (such as a black hole)

    Why are stars seen as pinpoint spots of light? Distance determines the size of the pinpoint and none of them are close other than our own sun.
    Shouldn't the star's light be spread out in all directions making the light diffused? If space was as filthy dirty as the air in downtown LA, yes, but it's not. For the most part

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    by Dr. Sardonicus
  • mhardy6647
    mhardy6647 Posts: 30,842
    Those questions touch on what's known as the "Night Sky Paradox" :)
    https://en.wikipedia.org/wiki/Olbers'_paradox

    It's actually pretty fundamental to current thinking on the expanding nature of the universe. :)
    As to what photons do, they will travel forever at the speed of light (in whatever medium they're traveling through) until and unless something happens to them. Stuff happens to photons all the time. B)

    The inviolable nature of c (the speed of light "in a vacuum") leads to some interesting effects all by itself. The speed of light is an upper limit, but it depends on the medium through which light passes (which is also true of the speed of sound... but I digress). The speed of light in a vacuum is different than the speed of light through glass, or water.
    One very real consequence of this is the blue light seen in water tanks in certain nuclear reactors. This
    glow is called Cherenkov Radiation and is a direct result of what happens when something traveling "at the speed of light" in one medium crosses a transition into another medium in which the
    speed of light is lower.
    Something's gotta give! And something does -- the excess velocity 'bleeds off' in the form of energy -- in the case of Cherenkov Radiation, in the form of "blue light" photons.
    https://www.sciencedirect.com/topics/chemistry/cherenkov-radiation

    Can't make his stuff up! ;)

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  • BlueFox
    BlueFox Posts: 15,253
    Tony M wrote: »
    I still think when we look through a powerful telescope, we're seeing WHAT IS THERE AT THAT MOMENT.

    We are. However, 'THAT MOMENT' occurred at some point in our past.
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  • mhardy6647
    mhardy6647 Posts: 30,842
    edited June 2022
    Viewed from the perspective of a light beam/photon particle, there is no time.
    Has to be that way, because the speed of light is an "inviolable" constant. For example, suppose you were on a train going 75% of the speed of light in one direction. Another train moving at 75% of the speed of light passes you going the other direction. What's the speed of the other train from your observation point? 150% of the speed of light, right? Wrong-o-rama, since it can't be. :#

    No problem -- as long as the rate of time passage decreases with increasing velocity.
    At the speed of light, "It's always five o'clock" is absolutely true, not just "somewhere". ;)

    This effect (time moving slower as the speed of light is approached), known as time dilation, was nicely explained by astrophysicist Dr. Brian May, albeit in his side hustle. B)

  • treitz3
    treitz3 Posts: 16,314
    treitz3 wrote: »
    For those that are interested....Mark your calendar for June 24th @4:20am. For the first time in 100 years, you may get a glimpse of the unusual sky occurrence on that morning when all five planets (Mercury, Venus, Mars, Jupiter, and Saturn) and the moon will be visibly lined up simultaneously.

    https://www.chaosmosnews.net/2022/06/05/dont-miss-rare-alignments-of-5-planets-for-first-time-in-100-years/?fbclid=IwAR3j1VjGwjsHxdZHgfsHVu1DP6cQV17M5UmZJXvsKmszga5tay747uZ6vZ4

    So, the very day I posted about ^^^this^^^, apparently NASA took a shot of the aligned planets from Chile.

    8gle8q4o3y1j.png

    The planet Mercury has wandered about as far from the Sun as it ever gets in planet Earth's sky. Near the eastern horizon just before sunrise it stands over distant Andes mountain peaks in this predawn snapshot from the valley of Rio Hurtado in Chile.

    June's other morning planets are arrayed above it, as all the naked-eye planets of the Solar System stretch in a line along the ecliptic in the single wide-field view. Tilted toward the north, the Solar System's ecliptic plane arcs steeply through southern hemisphere skies. Northern hemisphere early morning risers will see the lineup of planets along the ecliptic at a shallower angle tilting toward the south. From both hemispheres June's beautiful morning planetary display finds the visible planets in order of their increasing distance from the Sun.

    Tom

    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
  • treitz3
    treitz3 Posts: 16,314
    Here is another thing that fascinates me. Aurora Vortex's. These are sometimes visualized by lightning type flashes (although I have personally never seen any video to support this...).

    n2yrpsvg22mi.png

    Even cooler, is what can happen ABOVE them.....check this out....

    35qnaunhehp5.png

    Please note that this image above may be copyrighted, so I must disclose that the image and all information comes from this source >>> https://newsrnd.com/news/2021-03-05- ---space-hurricane-discovered-over-magnetic-north-pole--vortex-causes-solar-particles-to-rain --.rJoMp1l7_.html
    In contrast to the terrestrial hurricane, the space storm did not arise in the air, but in the plasma of the ionosphere, which is composed of ionized gas. Electromagnetic parts of the solar wind rotated in a circle. The vortex was driven by the earth's magnetic field. After about eight hours over the North Pole, the vortex collapsed.

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
  • treitz3
    treitz3 Posts: 16,314
    Here is a unique shot of the Elephant's Trunk nebula....2,400 light years away.

    611acfcm8q3j.png

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
  • pitdogg2
    pitdogg2 Posts: 22,067
    To believe we are the only life form in this giant soup would be very naive.
    Great stuff!
  • audioluvr
    audioluvr Posts: 4,628
    edited June 2022
    treitz3 wrote: »
    Here is a unique shot of the Elephant's Trunk nebula....2,400 light years away.

    611acfcm8q3j.png

    Tom

    Should be renamed the slimer nebula in honor of the ghost busters character. Actually it kinda looks like a diamond eyed bunny
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    Belles 21A Pre modded with Mundorf Supreme caps
    B&K M200 Sonata monoblocks refreshed and upgraded
    Belles 350A Reference modded with Mundorf Supreme caps
    Polk SDA 1C's modded / 1000Va Dreadnaught
    Wireworld Silver Eclipse IC's and speaker cables
    Harman Kardon T65C w/Grado Gold. (Don't laugh. It sounds great!)


    There is about a 5% genetic difference between apes and men …but that difference is the difference between throwing your own poo when you are annoyed …and Einstein, Shakespeare and Miss January.

    by Dr. Sardonicus
  • treitz3
    treitz3 Posts: 16,314
    Here's another date that we should be keeping an eye on. July 12, 2022 - NASA is scheduled to release the first images taken by the James Webb Space Telescope. Testing and calibration has been completed, target camera temps have been achieved (minus 449°F – just 11°F above absolute zero) and the first images look to be very promising.

    https://theconversation.com/the-james-webb-space-telescope-is-finally-ready-to-do-science-and-its-seeing-the-universe-more-clearly-than-even-its-own-engineers-hoped-for-184989?fbclid=IwAR2C60Wqb6SmCnOQ1PuqDq5IRSpWVgzBXGW16YToTel76I6zc1My_RDtbBk

    The MIRI camera, image on the right (below), allows astronomers to see through dust clouds with incredible sharpness compared with previous telescopes like the the Spitzer Space Telescope, which produced the image on the left.

    f9glpl07zxfx.png

    The Webb will be able to detect galaxies completely hidden by dust and undetectable by telescopes like Hubble. Exciting times! I don't know about you but I can't wait for the first images to start rolling in.

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
  • treitz3
    treitz3 Posts: 16,314
    Milky Way over the twisted rock formations of the Vermillion Cliffs Wilderness, White Pocket, Arizona.

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    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
  • VR3
    VR3 Posts: 26,609
    Beautiful stuff
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
  • treitz3
    treitz3 Posts: 16,314
    Astronomers Have Captured the Most Detailed Image Yet of a Monster Galaxy 12.4 Billion Light Years Away.

    https://news.leladanang.com/2022/06/18/astronomers-have-captured-the-most-detailed-image-yet-of-a-monster-galaxy-12-4-billion-light-years-away/?fbclid=IwAR34NjFfRklcbdyc5jJSHRLVrncIZVBM6hIxQKDEfHWm369RLpiXFDkIMaY

    048shehqhslz.png

    The previous captures we had...

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    This ‘monster galaxy’ is approximately 12 billion light-years from Earth and generates new stars 1,000 times faster than our own Milky Way galaxy. Scientists used Chile’s $1.5 billion ALMA Observatory to capture views of the galaxy with a resolution ten times higher than any previous attempt, dubbed ‘COSMOS-AzTEC-1.’

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
  • VR3
    VR3 Posts: 26,609
    Like going from atari to Xbox x
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
  • treitz3
    treitz3 Posts: 16,314
    Earth, as seen from Saturn...

    tu0lec60hnn3.png

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
  • treitz3
    treitz3 Posts: 16,314
    Courtesy of the Hubble space telescope, the Butterfly Nebula.

    cprdf59iiyaj.png

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
  • F1nut
    F1nut Posts: 47,902
    Is absolute zero cold enough?
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


    President of Club Polk

  • treitz3
    treitz3 Posts: 16,314
    Anybody know how to tow this? Asteroid worth up to $700 quintillion mapped in highest resolution yet.

    jow5kme9cqmx.png

    The 16 Psyche asteroid is scheduled to be visited by a NASA probe that will launch later in 2022. The spacecraft will visit the asteroid belt occupying the region between Mars and Jupiter, comprising remnants from the solar system's formation. One such remnant is the 16 Psyche asteroid, thought to be the core of an ancient planet, which contains a large number of valuable metals.

    https://news.mit.edu/2022/asteroid-psyche-maps-metal-0615

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
  • pitdogg2
    pitdogg2 Posts: 22,067
    There's at least 3 Ford Edsel's in that thing....
  • Tony M
    Tony M Posts: 10,840
    Looks like aliens used it for target practice.
    Most people just listen to music and watch movies. I EXPERIENCE them.
  • mhardy6647
    mhardy6647 Posts: 30,842
    treitz3 wrote: »
    Anybody know how to tow this? Asteroid worth up to $700 quintillion mapped in highest resolution yet.

    jow5kme9cqmx.png

    The 16 Psyche asteroid is scheduled to be visited by a NASA probe that will launch later in 2022. The spacecraft will visit the asteroid belt occupying the region between Mars and Jupiter, comprising remnants from the solar system's formation. One such remnant is the 16 Psyche asteroid, thought to be the core of an ancient planet, which contains a large number of valuable metals.

    https://news.mit.edu/2022/asteroid-psyche-maps-metal-0615

    Tom

    Psychedelic, man.

    :#

  • treitz3
    treitz3 Posts: 16,314
    For some reason, out of all of the incredible space photos, that photo has got to be either my all time favorite or at the very least, one of the top 5. This is one of those pictures that got lost in the vast abyss of the picture thread. Thanks man!

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
  • nooshinjohn
    nooshinjohn Posts: 24,030
    edited June 2022
    ....
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  • treitz3
    treitz3 Posts: 16,314
    From NASA - Eye of Sauron or dust ring formed around the young star Fomalhaut approx. 1.4 billion miles wide! The black circle in the center giving the image resemblance of an eye is a light block that allows the reflected light to be photographed.

    c38p9l2octxx.png

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
  • treitz3
    treitz3 Posts: 16,314
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    Our own moon. Without the moon, we would have far less (if any) tectonic plate shift, tides would go to a highly argued 50% height to 75% drop in height, we wouldn't have any seasons due to no stabilization of Earth tilt (basically, we would simply wobble erratically), over time within our days would be altered (we used to have 4 hour days billions of years ago) and the loss of the "flexing" of the Earth could cause some rather strange and unknown effects with earthquake and volcanic activity.

    It is thought that without the moon? We wouldn't be here right now. None of us.

    Tom
    ~ In search of accurate reproduction of music. Real sound is my reference and while perfection may not be attainable? If I chase it, I might just catch excellence. ~
  • jbreezy5
    jbreezy5 Posts: 775
    Great post Tom!
  • mhardy6647
    mhardy6647 Posts: 30,842
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    Nothin' special -- but I was out photographing lightning bugs again last night. The night sky was fairly pretty (given that it's early summer), so I snapped a few photos.