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Distant Universe

Discussion in 'Science & Technology' started by Drone, May 6, 2012.

  1. Drone

    Drone

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    We have a new distance record holder. It's the newly discovered galaxy, named MACS0647-JD, as it was 420 million years after the Big Bang. Its light has travelled for 13.3 billion years to reach Earth, which corresponds to a redshift of approximately 11.

    Just think about that, the light has been on the road for billions of years. :eek:

    [​IMG]

    Yeah, that tiny dot. It's a baby galaxy. Very tiny.

    Tiny and young.

    Thanks to gravitational lensing, otherwise they'd have never found it. I hope that James Webb Space Telescope (scheduled for launch in 2018) will shed more light on this :toast:

    http://phys.org/news/2012-11-hubble-candidate-distant-universe.html
     
  2. micropage7

    micropage7

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    Scientists may have glimpsed the most distant galaxy ever seen. The galaxy, known as MACS0647-JD, appeared as a tiny dot behind an enormous galactic cluster that lies between the Big and Little Dipper.

    Scientists combined data from the Hubble space telescope with NASA’s Spitzer Space Telescope to make the discovery. MACS0647-JD would have existed about 13.3 billion years ago, or roughly 420 million years after the Big Bang. This would place it around 200 million years earlier than previous candidates for most distance object ever spotted

    http://www.wired.com/wiredscience/2012/11/distant-galaxy-hubble/
     
  3. Drone

    Drone

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    [​IMG]

    Galaxy clusters from the first half of the universe are hard to find because they are so far away and because not very many had time to assemble by then. What's more, they are especially hard to see using visible-light telescopes: light that left these faraway structures in visible wavelengths has been stretched into longer, infrared wavelengths due to the expansion of space. WISE can hunt some of these rare colossal structures down because it scanned the whole sky in infrared light.

    And they did it using the 16-inch (40 cm) telescope which ran out of its coolant :eek: Well done! It's not the size that matters, it's how you use it ;)

    http://phys.org/news/2012-12-telescope-spies-gigantic-galaxy-clusters.html
     
  4. HammerON

    HammerON The Watchful Moderator Staff Member

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    Another thread I will sub to thanks to Drone:toast:
     
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  5. Drone

    Drone

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    ^You're welcome HammerON :)

    Little bit old news (July 2011) but it's never late I guess. Very interesting read and indeed post-worthy.

    Science Daily

    Astronomy Central



    That's mesmerizing.

     
    Last edited: May 7, 2014
  6. Drone

    Drone

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    [​IMG]

    Quasar named GB 1428+4217 produced the most distant X-ray jet ever observed.
    GB 1428 is located 12.4 billion ly from Earth. The researchers think the length of the jet in GB 1428 is at least 230,000 ly, or about twice the diameter of the entire Milky Way.

     
    Last edited by a moderator: Nov 20, 2013
  7. Drone

    Drone

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    Astronomers have discovered the most distant supernova

    [​IMG]

    It's a Type 1a supernova

    This discovery should help astronomers better understand the nature of dark energy. Even though this supernova is so distant and faint (the equivalent of looking at a firefly from 5000 km away)

    SPACE.com
     
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  8. 3870x2

    3870x2

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    Everything in the universe is effected by gravity, now what if - hear me out on this - what if it isn't the big bang that is propelling us in that direction, but rather we are being pulled in by something that is so massive, that its gravity is pulling the universe as we know it to itself.

    Deep shlt man.
     
  9. Drone

    Drone

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    What you've just said is exactly what brane cosmology is about :) It says that dark energy can be a gravitational pull exerted by neighboring brane (Universe) which leads to our Universe's expansion.
     
  10. 3870x2

    3870x2

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    sigh, of course it has been thought of already:laugh:

    I like reading about these things though. I wish we could get a supernova closer than the one in 1604, but atleast 20 ly away. Apparently three go off per century in the Milky way, but I guess they are either too small, or too far away.
     
  11. Drone

    Drone

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    Yeah unfortunately we (Solar system) located in "suburban" area of Milky Way, the least exciting place :'( Luckily there will be James Webb telescope which can observe areas never seen before. Without uber high technologies and space travel we won't see much.
     
  12. 3870x2

    3870x2

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    This telescope is one of the things I am most excited for. This telescope could reinvent the way we see space. Imagine the pictures we didn't have before the Hubble telescope.
     
  13. Drone

    Drone

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    Extremely rare triple quasar found.

    [​IMG]

     
  14. Drone

    Drone

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    The most distant galaxy yet

    [​IMG]

    Source
     
  15. HammerON

    HammerON The Watchful Moderator Staff Member

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    Very cool:toast:
     
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  16. Drone

    Drone

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    Absolutely amazing discovery! And there are thought to be as many as 70 billion brown dwarfs in the Milky Way’s thin disk!!!

    [​IMG]

    [​IMG]



    Images of WISE 0013+0634 & WISE 0833+0052 respectively.
     
  17. Drone

    Drone

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    Distant gravitationally lensed type 1a Supernova discovered. It's called PS1-10afx and located ~ 9 billion ly from Earth. It's just happened to be magnified 30 times by a well-placed cosmic lens (galaxy).

    [​IMG]
     
  18. 4ghz

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    The size of known universe is limited only by the light that have reached us, and the oldest light source is only a few hundred million years after the big bang. But really, how big is the actual universe? Since there is no real "center" of the universe, for all we know we're about 50 billion LY away from the center (ground zero) of the big bang?

    Tying to think infinite universe is giving me headaches. I think I'll leave that to quantum computer. (and let it figure out what the universe was like before the big bang.)
     
  19. Drone

    Drone

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    New amazing computer simulation of cosmic web

     
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  20. Drone

    Drone

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    [​IMG]

    The image of the center of the newly confirmed JKCS 041 galaxy cluster, located at a distance of 9.9 billion ly. The galaxies located in the cluster are circled. Blue circles show the few galaxies that continue to form new stars, while yellow circles show those that have already entered quiescence.
     
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  21. Ahhzz

    Ahhzz

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    It's almost depressing realizing how much of the known universe we'll never get to see, know about, understand, nor our children's children.... and beyond that, we may have screwed ourselves so badly that it won't matter....
     
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  22. revin

    revin

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    Awesome thread Drone !! Thanks for keeping us updated !
     
  23. Gilletter

    Gilletter

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    Ever think we're just a spec of dust on the eyelid of some creature that we are microscopic to? Like bacteria to our relative size...
     
  24. Drone

    Drone

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    Agree with everyone. Universe is amazing. Here's a nice article with Kip Thorne and some cool videos:



     
  25. Drone

    Drone

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