The Space Thread -

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  • mrbigbluelight
    mrbigbluelight Posts: 9,874
    This is as good as a cable debate 🤗
    Sal Palooza
  • mrbigbluelight
    mrbigbluelight Posts: 9,874
    Just heard this about the space telescope Chandra
    (X-rays).
    ÑOT a political post but it does involve Congress.
    NOT A POLITICAL POST

    https://youtube.com/shorts/sE-RUu9ClsU?si=vKQKxCjyrcFoqp8S
    Sal Palooza
  • VR3
    VR3 Posts: 28,798
    edited April 2024
    I'm not sure I follow, we always see the same side of the moon... It never changes

    During the total solar eclipse that’s set to occur, the far side of the Moon will be completely bathed in sunlight as the Moon blocks the Sun from Earth’s view. However, even the 2024 solar eclipse won’t alter the fact that we always see the same side of the Moon. This phenomenon is due to Earth’s gravity and the Moon’s rotation1

    The dark side is simply the side not receiving reflected light from the sun.

    So in an eclipse the side we see would momentarily be the dark side but it's ultimately not a different side of the moon.
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
  • mrbigbluelight
    mrbigbluelight Posts: 9,874
    edited April 2024
    Pink Floyd "DARK" side of the moon
    "DARK" implies "Unknown", "Unseen", "Hidden", "Mysterious ", "Trippy"
    It makes one quizzical, searching for what's "out there". 🤔

    "Far Side" might be something one's grandma might come up with in her Canasta Club
    Grandma's a nice lady, but... Sorry Grandma, we're sticking with the correct
    DSOTM 👍😇
    Sal Palooza
  • maxward
    maxward Posts: 1,594
    edited April 2024
    The moon does indeed rotate. It doesn’t appear to from our perspective because its period of rotation is the same duration as its period of revolution.
  • mrbigbluelight
    mrbigbluelight Posts: 9,874
    edited April 2024
    It doesn't rotate.
    It revolves.

    If you attach a tennis ball to the end of a string and swing it around your head, it doesn't rotatate, it revolves.

    The only way I can make this explanation any easier is if I personally demonstrate by showing up at your housr.
    I will, of course, expect a complimentary meal and beverage for my services.
    Gas money may be required depending on your distance.
    Science ain't cheap.
    Sal Palooza
  • maxward
    maxward Posts: 1,594
    It rotates AND revolves. Rotation is a spin on its axis. Revolution is an orbit (in this case, around the Earth). The fact that it rotates once every 28ish days and makes a revolution in the same 28ish days allows us on Earth to see only one side of the Moon. If it didn’t rotate, as you said, we’d see all of the Moon during the month

    Take your tennis balls and put them on them the ground. If you leave one alone and make the other revolve around it, you will need to spin that other ball once per revolution in order to keep the same side facing the stationary ball. Alternatively, keep spinning the tennis ball around your head and have someone else look down on you as you do this. That person will see that the tennis ball rotates exactly once for every time it revolves around your head.

    It’s about perspective. Looking at the Moon from space, it rotates. I’d like a rare ribeye and a glass of Aardbeg, please.
  • mhardy6647
    mhardy6647 Posts: 34,016
    my work is done here. B):#:D:blush:
  • maxward
    maxward Posts: 1,594
    Until a pot needs to be stirred.
  • treitz3
    treitz3 Posts: 19,238
    At the end of the day and after 2 years of my boss and I talking much smack to one another, we both mutually ended up cancelling the bet. The question was,

    "What is the dark side of the moon and what causes it?"

    We were both correct. It was just that the question was flawed from the get go. He was correct in his stance that it was the side of the moon we never see (which to me was the far side, not the dark side) but that wasn't my question. The bet was what caused the dark side of the moon. In my mind, I was referring to the unlit portion of the moon. In his mind, he was referring to the dark/far side of the moon.

    We did find it funny that of all of the planetariums we called to get an "official" answer? They would all end up agreeing with the both of us. We both told them what was riding on the bet, and that we were in search of the official answer.

    The truth is, that the question itself was flawed. We did have a lot of fun talking smack and asking people this question. Some of the answers left you scratching your head, seriously questioning the intelligence of some folks and other answers were flat out hilarious.

    Of course, this was back in 1988-1990 before the days of Google and folks were more interested in a dress and some chick, name of Monica Lewinski. :o

    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. ~
  • maxward
    maxward Posts: 1,594
    Ya mean I coulda just said “Google it.” Where’s the fun in that?
  • treitz3
    treitz3 Posts: 19,238
    The sun, appearing to smile.

    o416qy2aqnpb.jpg

    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. ~
  • In the next couple of days we should be able to observe a Nova

    https://www.facebook.com/share/v/vJxeL6AJZzXPgmHp/?mibextid=SphRi8

    Every 80 years ? Maybe this time it'll go SUPER Nova

    BTW the "Comments" are
    ....well ...interesting
    Sal Palooza
  • treitz3
    treitz3 Posts: 19,238
    4r5ykcyw8sra.jpg

    A solar prominence captured by a small telescope in Gilbert, Arizona. The monsteresque plume of gas was held aloft by the ever-present but ever-changing magnetic field near the surface of the Sun. Our active Sun continues to show an unusually high number of prominences, filaments, sunspots, and large active regions as solar maximum approaches in 2025.

    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: 25,473
    treitz3 wrote: »
    4r5ykcyw8sra.jpg

    A solar prominence captured by a small telescope in Gilbert, Arizona. The monsteresque plume of gas was held aloft by the ever-present but ever-changing magnetic field near the surface of the Sun. Our active Sun continues to show an unusually high number of prominences, filaments, sunspots, and large active regions as solar maximum approaches in 2025.

    Tom

    Looks like the T800 has arrived...
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
  • mhardy6647
    mhardy6647 Posts: 34,016
    treitz3 wrote: »
    4r5ykcyw8sra.jpg

    A solar prominence captured by a small telescope in Gilbert, Arizona. The monsteresque plume of gas was held aloft by the ever-present but ever-changing magnetic field near the surface of the Sun. Our active Sun continues to show an unusually high number of prominences, filaments, sunspots, and large active regions as solar maximum approaches in 2025.

    Tom

    I'm sure everything is just fine. Normal as table salt. No problems goin' on at the surface of Ol' Sol. Nosiree Bob.
    :#
  • Clipdat
    Clipdat Posts: 12,966
    Time to offer it a sacrifice.
  • pitdogg2
    pitdogg2 Posts: 25,722
    Clipdat wrote: »
    Time to offer it a sacrifice.

    I offer up kex.....
    😇
  • Clipdat
    Clipdat Posts: 12,966
    Nah that would just piss it off more.
  • nooshinjohn
    nooshinjohn Posts: 25,473
    edited August 2024
    It’s not like we fully understand the physics of our sun… we think it might tick on for another 5 billion years, but then again, it could go nova tomorrow and that ruin your plans for the weekend real quick.
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
  • billbillw
    billbillw Posts: 6,884
    It’s not like we fully understand the physics of our sun… we think it might tick on for another 5 billion years, but then again, it could go nova tomorrow and that ruin your plans for the weekend real quick.

    Going nova is not something that could happen tomorrow. That happens with white dwarfs that accumulate hydrogen gas at the surface (typically pulling it from a nearby red giant) until the surface layer of hydrogen reaches critical pressure and starts fusion, at which time, it blows itself out in a "nova." Not a supernova, that's a different process. Either way, these things take a long time to happen.
    For rig details, see my profile. Nothing here anymore...
  • treitz3
    treitz3 Posts: 19,238
    nrmntn24akpc.jpg

    The James Webb Space Telescope (JWST) just released a new image of a pair of colliding galaxies; NGC 2207 and IC 2163.

    NGC 2207 and IC 2163 are a pair of colliding galaxies situated 114 million light years away in the constellation Canis Major. NGC 2207 has a diameter of 143,000 light years, and IC 2163 has a diameter of 101,000 light years.

    Due to the interaction, NGC 2207 has distorted the shape of IC 2163, flinging out stars and gas into long streamers stretching out a hundred thousand light-years toward the right-hand edge of the image.

    The calculations indicate that IC 2163 is swinging past NGC 2207 in a counterclockwise direction, having made its closest approach 40 million years ago. However, IC 2163 does not have sufficient energy to escape from the gravitational pull of NGC 2207, and is destined to be pulled back and swing past the larger galaxy again merging into a single, more massive galaxy in billions of years.

    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. ~
  • For some reason that image makes me think of the movie "Forbidden Planet"
    Sal Palooza
  • treitz3
    treitz3 Posts: 19,238
    Galaxies gobbling up other galaxies is actually quite common. Andromeda has reportedly gobbled up more than 30 other galaxies since its inception.

    FYI - The Milky Way and Andromeda are also ultimately destined to collide with each other, according to astronomers. The merger is said to have already begun (star swapping). That said, there is nothing to be worried about for another 4 to 8 billion years from now.....a blink of an eye in space terms.

    One thing that may thwart this merger is (in 2 billion years) the Large Magellanic Cloud. This may throw the Milky Way out into interstellar space. For a VERY technical report on this, I'll link the Royal Astronomical Society's article from 2019 about this cloud. For of a layman's term of this cloud, just run a search.

    https://academic.oup.com/mnras/article/483/2/2185/5181341

    Here is a quote from the Introduction section from that link.
    The Universe is a dynamical system: galaxies are continuously growing and undergoing morphological transformation. For the most part, this is a slow, unremarkable process, but from time to time evolution accelerates through spectacular galaxy mergers. The Milky Way (MW) appears to have been quiescent for many billions of years but its demise has been forecast to occur when, in several billion years time, it collides and fuses with our nearest giant neighbour, the Andromeda galaxy (van der Marel et al. 2012b). This generally accepted picture ignores the enemy within – the Large Magellanic Cloud (LMC).

    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. ~
  • BlueBirdMusic
    BlueBirdMusic Posts: 2,360
    "Sometimes you have to look to the past to understand where you are going in the future"

    “Fa sol sol la la fa sol la ... " ~ a soul-stirring sound that is at once alluring and haunting surges through the room as their voices rise and merge. First they sing the notes, then the words from the Sacred Harp hymnal, which was first published in 1844. Sacred Harp a singing tradition that dates back nearly to the founding of the nation.




    Harry / Marietta GA
  • mhardy6647
    mhardy6647 Posts: 34,016
    treitz3 wrote: »
    Galaxies gobbling up other galaxies is actually quite common. Andromeda has reportedly gobbled up more than 30 other galaxies since its inception.

    FYI - The Milky Way and Andromeda are also ultimately destined to collide with each other, according to astronomers. The merger is said to have already begun (star swapping). That said, there is nothing to be worried about for another 4 to 8 billion years from now.....a blink of an eye in space terms.

    One thing that may thwart this merger is (in 2 billion years) the Large Magellanic Cloud. This may throw the Milky Way out into interstellar space. For a VERY technical report on this, I'll link the Royal Astronomical Society's article from 2019 about this cloud. For of a layman's term of this cloud, just run a search.

    https://academic.oup.com/mnras/article/483/2/2185/5181341

    Here is a quote from the Introduction section from that link.
    The Universe is a dynamical system: galaxies are continuously growing and undergoing morphological transformation. For the most part, this is a slow, unremarkable process, but from time to time evolution accelerates through spectacular galaxy mergers. The Milky Way (MW) appears to have been quiescent for many billions of years but its demise has been forecast to occur when, in several billion years time, it collides and fuses with our nearest giant neighbour, the Andromeda galaxy (van der Marel et al. 2012b). This generally accepted picture ignores the enemy within – the Large Magellanic Cloud (LMC).

    Tom


    Sounds like we need some anti-monopoly legislation, quick.
    ;)
  • nooshinjohn
    nooshinjohn Posts: 25,473

    They even have built-in Tesla chargers…
    The Gear... Carver "Statement" Mono-blocks, Mcintosh C2300 Arcam AVR20, Oppo UDP-203 4K Blu-ray player, Sony XBR70x850B 4k, Polk Audio Legend L800 with height modules, L400 Center Channel Polk audio AB800 "in-wall" surrounds. Marantz MM7025 stereo amp. Simaudio Moon 680d DSD

    “When once a Republic is corrupted, there is no possibility of remedying any of the growing evils but by removing the corruption and restoring its lost principles; every other correction is either useless or a new evil.”— Thomas Jefferson
  • VR3
    VR3 Posts: 28,798
    Saturn

    z5mozomox76c.jpg
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
  • NotaSuv
    NotaSuv Posts: 3,864
    edited January 5
    Space related fun facts

    One of the largest buildings in the world, the Kennedy Space Center Vehicle Assembly Building. It is so large, it has its own climate. On humid days and without the 10,000 tons of air conditioning equipment, rain clouds would form below the ceiling. This building covers 8 acres, is 525 feet tall and 518 feet wide. 65,000 cubic yards of concrete and nearly 100,000 tons of steel. To put in perspective, the blue part of the American Flag is roughly the size of an NBA basketball court.. I’m extremely privileged that I got to see this up close in person.