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I saw the Stars in my cereal this morning [SPACE](NSF ALIENS and 56K)

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    LuvTheMonkeyLuvTheMonkey High Sierra Serenade Registered User regular
    If I ever become Oprah rich I'm buying land in northern PA, NM, and Australia, and building some remote observatories for myself.

    It's a fun dream.

    Molten variables hiss and roar. On my mind-forge, I hammer them into the greatsword Epistemology. Many are my foes this night.
    STEAM | GW2: Thalys
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    mensch-o-maticmensch-o-matic Registered User regular
    can someone explain to me why planets are always orb(-ish) shaped, its something to do with gravity right?

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    AnosognosAnosognos Who wants to play video games?Registered User regular
    PiptheFair wrote: »
    space is gay

    gayer than sex with other men

    Fo' realz.

    It's pretty to look at. Wouldn't want to go there.

    Having learned about the horrors from astronauts and their instructors, I've lost all desire to actually ever go there.

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    AnosognosAnosognos Who wants to play video games?Registered User regular
    can someone explain to me why planets are always orb(-ish) shaped, its something to do with gravity right?

    Every part attracts every other part. The net effect is that everything is pulled toward the center of mass. This naturally coalesces into a spheroid because it's the closest everything can be packed in a three dimensional shape.

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    PiptheFairPiptheFair Frequently not in boats. Registered User regular
    can someone explain to me why planets are always orb(-ish) shaped, its something to do with gravity right?

    essentially

    there is a sweet spot where once you achieve that level of mass, along with centrifugal force, your mass essentially collapse in equally and you form a sphere

    there are some asteroids in the belt that are very close to that mass

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    AnosognosAnosognos Who wants to play video games?Registered User regular
    Yeah, smaller things are lumpy because there just isn't enough force to crush them into a sphere.

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    SolarSolar Registered User regular
    The most perfect spheres in the Universe are (I believe) neutron stars because the gravity is so strong and thus the pressure on it's matter so vast that any imperfection is squashed flat!

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    PiptheFairPiptheFair Frequently not in boats. Registered User regular
    Solar wrote: »
    The most perfect spheres in the Universe are (I believe) neutron stars because the gravity is so strong and thus the pressure on it's matter so vast that any imperfection is squashed flat!

    neutron stars are so unbelievably dense it is almost not comprehensible

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    AnosognosAnosognos Who wants to play video games?Registered User regular
    edited February 2012
    Even so, they're oblate if they spin fast enough to compress along their axis. And some of them spin pretty damned fast.

    Anosognos on
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    PiptheFairPiptheFair Frequently not in boats. Registered User regular
    Anosognos wrote: »
    Even so, they're oblate if they spin fast enough to compress along their axis. And some of them spin pretty damned fast.

    those become pulsars!

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    DruhimDruhim Registered User, ClubPA regular
    Also, the Hubble views of the Carina nebula are just amazing. From the detailed images of Eta Carinae and its gas lobes to the massive pillars of gas and dust being carved by solar winds.

    carina-nebula-landscape-hubble.jpg

    Those "antenna" on the top of the tall column and the shorter, thicker one to the left are streams of matter flowing from the poles of young stars inside the clouds.

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    PiptheFairPiptheFair Frequently not in boats. Registered User regular
    Druhim wrote: »
    Those "antenna" on the top of the tall column and the shorter, thicker one to the left are streams of matter flowing from the poles of young stars inside the clouds.

    send keith a message

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    SolarSolar Registered User regular
    Anosognos wrote: »
    Even so, they're oblate if they spin fast enough to compress along their axis. And some of them spin pretty damned fast.

    Yeah, I am just reading up on them now. Seems like they all spin, and the ones that spin at a slower speed are basically perfect sphere, but the faster ones extend along their axis. Makes sense, I guess.

    Also I just read about Starquakes. Man, Starquake would be a fantastic superhero name, I am stealing that!

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    AnosognosAnosognos Who wants to play video games?Registered User regular
    Also magnetar. Even tho he'd just be a Magneto ripoff.

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    KadithKadith Registered User regular
    can someone explain to me why planets are always orb(-ish) shaped, its something to do with gravity right?

    The real quick explanation is that yes it mostly has to do with gravity
    The current model for planet formation has them forming at the same time as the star out of the same material. This means that the material which is spinning around the star gives the body its initial motion.
    In order to maintain this motion with some stability the body must be mostly spherical. With liquids and gases this is relatively easy and is maintained by the balance between the rotational forces and gravity.
    With rocky bodies this balance is maintained by collisions, and tectonics.

    And you don't have to have a perfect sphere, just as long as your orbital motions are relatively stable over the period of your orbit.

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    KadithKadith Registered User regular
    Druhim wrote: »
    Also, the Hubble views of the Carina nebula are just amazing. From the detailed images of Eta Carinae and its gas lobes to the massive pillars of gas and dust being carved by solar winds.

    carina-nebula-landscape-hubble.jpg

    Those "antenna" on the top of the tall column and the shorter, thicker one to the left are streams of matter flowing from the poles of young stars inside the clouds.

    This is a really nice nebula because normally we don't get to see these kinds of features because, well they're dark. But thanks to those big stars behind it illuminating it we get to see all that and more.

    zkHcp.jpg
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    JoolanderJoolander Registered User regular
    Druhim wrote: »
    Also, the Hubble views of the Carina nebula are just amazing. From the detailed images of Eta Carinae and its gas lobes to the massive pillars of gas and dust being carved by solar winds.

    carina-nebula-landscape-hubble.jpg

    Those "antenna" on the top of the tall column and the shorter, thicker one to the left are streams of matter flowing from the poles of young stars inside the clouds.

    man

    I wish space actually looked like that

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    The_ScarabThe_Scarab Registered User regular
    Why do moons go around a planet in the same direction as the planet spins? Is that even a thing?

    Also, why are the planets and other shit around the sun all on sorta the same plane?

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    PiptheFairPiptheFair Frequently not in boats. Registered User regular
    The_Scarab wrote: »
    Why do moons go around a planet in the same direction as the planet spins? Is that even a thing?

    Also, why are the planets and other shit around the sun all on sorta the same plane?

    1. gravity essentially

    2. during system formations ecretion discs are formed on different planes, and well newtonian physics, if nothing knocks them off their trajectory they will stay that way

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    BeastehBeasteh THAT WOULD NOT KILL DRACULARegistered User regular
    http://www.newscientist.com/article/dn12546-biggest-void-in-space-is-1-billion-light-years-across.html

    can you begin to comprehend how vast this expanse of sheer nothingness is

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    WeaverWeaver Who are you? What do you want?Registered User regular
    Anosognos wrote: »
    Also magnetar. Even tho he'd just be a Magneto ripoff.

    I fucking love magnetars.

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    BeastehBeasteh THAT WOULD NOT KILL DRACULARegistered User regular
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    WeaverWeaver Who are you? What do you want?Registered User regular
    The_Scarab wrote: »
    Why do moons go around a planet in the same direction as the planet spins? Is that even a thing?

    Also, why are the planets and other shit around the sun all on sorta the same plane?
    First of all, Triton orbits the wrong direction around Neptune. With very, very few exceptions, celestial bodies in our solar system rotate in a clockwise direction. This is theorized to be the resultant spin from back when the solar system was accreting out of our planetary nebula.

    If items spinning clockwise can be associated with the formation of the solar system it stands to reason that items with opposite spin would have to have come from outside the system. There is no mechanism as yet understood to explain the counterspin.

    Read more: http://scienceray.com/astronomy/triton-may-be-a-rogue-visitor/#ixzz1nLamsIFC

    http://scienceray.com/astronomy/triton-may-be-a-rogue-visitor/

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    AnosognosAnosognos Who wants to play video games?Registered User regular
    edited February 2012
    The_Scarab wrote: »
    Why do moons go around a planet in the same direction as the planet spins? Is that even a thing?

    Also, why are the planets and other shit around the sun all on sorta the same plane?

    They usually do because it all formed from a disc of gas and dust. That's just Newtonian mechanics. Think of spinning pizza dough. It wants to flatten out into a disk. The planets themselves are going to be spinning the same direction they orbit as they're essentially like objects floating at the center of eddies in a very strong current. The moons that orbit them do the same thing.

    There are exceptions. Moons that orbit the opposite direction of planetary spin are thought to be objects from elsewhere that were passing by and got captured by the planet's gravity. Venus spins retrograde, suggesting it actually got knocked end over end by a massive impact at some point.

    Anosognos on
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    PiptheFairPiptheFair Frequently not in boats. Registered User regular
    Beasteh wrote: »
    http://www.newscientist.com/article/dn12546-biggest-void-in-space-is-1-billion-light-years-across.html

    can you begin to comprehend how vast this expanse of sheer nothingness is

    it contains all your pro-posts

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    KadithKadith Registered User regular
    Essentially we are assuming everything behaved nicely when it comes to planetary body formations.

    And if it didn't someone threw a rock at it.

    We hope.

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    BeastehBeasteh THAT WOULD NOT KILL DRACULARegistered User regular
    bro..

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    AnosognosAnosognos Who wants to play video games?Registered User regular
    We assume a lot of things. There's no other choice. It's when you assume more than is necessary that you significantly raise your chances of getting into trouble.

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    The_ScarabThe_Scarab Registered User regular
    What's at the middle of Jupiter? It is gas all the way down or is there a tiny planet in there?

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    AnosognosAnosognos Who wants to play video games?Registered User regular
    Beasteh wrote: »
    http://www.newscientist.com/article/dn12546-biggest-void-in-space-is-1-billion-light-years-across.html

    can you begin to comprehend how vast this expanse of sheer nothingness is

    No. No, I can't. It's.... big.

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    WeaverWeaver Who are you? What do you want?Registered User regular
    The_Scarab wrote: »
    What's at the middle of Jupiter? It is gas all the way down or is there a tiny planet in there?

    Idea is that it has a solid core made of the heaviest elements that have sunk down, surrounded by hydrogen that is under such intense pressure that it's become metallic.

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    XehalusXehalus Registered User regular
    This was in the OP, but goddamn

    40DXV.jpg

    forming supernovas are scary

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    WeaverWeaver Who are you? What do you want?Registered User regular
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    KadithKadith Registered User regular
    The_Scarab wrote: »
    What's at the middle of Jupiter? It is gas all the way down or is there a tiny planet in there?

    Rocky bits that started the initial mass collection surrounded by ice is the general accepted answer.

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    ArtreusArtreus I'm a wizard And that looks fucked upRegistered User regular
    Magnetars are the coolest.

    http://atlanticus.tumblr.com/ PSN: Atlanticus 3DS: 1590-4692-3954 Steam: Artreus
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    AnosognosAnosognos Who wants to play video games?Registered User regular
    The wind sound sells it. Curse my monkey brain.

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    OghulkOghulk Tinychat Janitor TinychatRegistered User regular
    Darmak wrote: »
    MrMonroe wrote: »
    oh yes, hello

    I want to get me a really nice telescope to keep up in NH so I can use it somewhere with virtually no light pollution

    Yeah, I'm glad I live in rural Texas because I don't have to drive far to get away from light pollution.

    So much fucking light pollution near central texas

    like holy fucking shit

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    KadithKadith Registered User regular
    Anosognos wrote: »
    Beasteh wrote: »
    http://www.newscientist.com/article/dn12546-biggest-void-in-space-is-1-billion-light-years-across.html

    can you begin to comprehend how vast this expanse of sheer nothingness is

    No. No, I can't. It's.... big.

    Just count how many Milky-Way's you can fit in there.

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    AnosognosAnosognos Who wants to play video games?Registered User regular
    edited February 2012
    But I can't comprehend how big the Milky Way is. Or even the solar system, really. That's the problem. Shit's too big.

    Also, yeah, anything near the San Antonio-Austin-Dallas corridor or east of there is pretty crap for star gazing.

    Anosognos on
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    KadithKadith Registered User regular
    Weaver wrote: »

    Magnetic fields and hot plasma are hella crazy

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