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The Most Distant Galaxy in the Universe So Far

admin by admin
January 27, 2020
in Công Nghệ
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The Most Distant Galaxy in the Universe So Far



From ESOCast: An international team of astronomers using ESO’s Very Large Telescope has measured the distance to the most remote galaxy so far. This is the first time that astronomers have been able to confirm that they are observing a galaxy as it was in the era of reionization — when the first generation of brilliant stars was making the young Universe transparent and ending the cosmic Dark Ages.

We are going to find out how a team of astronomers used ESO’s Very Large Telescope, the VLT, to confirm that a galaxy that had previously been spotted in images from the NASA/ESA Hubble Space Telescope is in fact the most distant object that is ever been identified in the Universe.

Studying these first galaxies is extremely difficult; they are very faint and small and by the time their dim light gets to Earth it falls mostly in the infrared part of the spectrum because it has been stretched by the expansion of the Universe.

To make matters worse, at this very early time, less than a billion years after the Big Bang, the Universe was not completely transparent. It was filled with hydrogen which acted kind of like a fog and absorbed the ultraviolet radiation from the young galaxies.

So, holding the record for having measured the redshift of the most distant object in the Universe is not just a trophy to hang on the wall, it does have important astrophysical implications. This is the first time that we’ve managed to obtain spectroscopic observations of a galaxy from the era of reionization, in other words from the time when the Universe was still clearing out the hydrogen fog.

Despite the difficulties of finding these early galaxies, the new Wide Field Camera 3 on the NASA/ESA Hubble Space Telescope discovered several very good candidate objects earlier in 2010.

They were thought to be galaxies shining in the early Universe at redshifts greater than eight, but confirming the distances to such faint and remote objects is an enormous challenge and can only reliably be done using spectroscopy from very large ground-based telescopes.

The team was excited to find that if you combine the huge light collecting power of the VLT, with the sensitivity of its infrared spectroscopic instrument, SINFONI, and if you then use a very long exposure time you just might be able to detect the faint glow from one of these very remote objects and then go on to measure its distance.

A 16 hour exposure with the VLT and SINFONI of the galaxy UDFy-38135539 did indeed show the very faint glow from hydrogen at a redshift of 8.6, which means that this light left the galaxy when the Universe was only about 600 million years old. This is the most distant galaxy ever reliably confirmed.

One of the puzzling things about this discovery is that the ultraviolet radiation emitted by the galaxy does not actually seems to be strong enough to be able to clear out the hydrogen fog around the galaxy.

So one possible explanation is that there must be other galaxies, probably fainter and less massive neighbours, that helped ionize the hydrogen in the region of space around the galaxy, thus making it transparent.

Without this additional help the brilliant light from the main galaxy would have been trapped in the surrounding hydrogen fog and it could not have even started its 13 billion-year journey towards Earth.

Studying the era of reionization and the formation of the first galaxies is really pushing the capability of current telescopes and instruments to the limit. But, this will be exactly the type of science that ESO’s European Extremely Large Telescope will excel at. Once operational, this will be the largest optical and infrared telescope in the world.

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Comments 45

  1. Bennybenasi says:
    2 years ago

    What went 'big bang'? If before the universe there was nothing, what went bang… there has to b a creator i can't believe this is all by chance without a good answer to my question

    Reply
  2. desi talent italy lovely says:
    2 years ago

    We don't even know who we are, from where we came. We don't know about our selves, how can we know about other incredible things in the space. We can't create any thing, even a grain of sand which can never burn. To find the god ,only we should find in our selves.

    Reply
  3. Eric Schweitzer says:
    2 years ago

    Absolutely FAKE!! Egads folks WAKE UP!! NASA are the Gate keepers to the Zionists/Freemason manipulation control system to recreate your reality! It’s all bullshit!

    Reply
  4. Drexel King says:
    2 years ago

    The most distant galaxy is literally up your ass and that's a fact when truly come to grips that we live in an enclosed flat world.

    Reply
  5. ronald bowerman says:
    2 years ago

    This just dosn,t make sense they say a galaxy is and heading our way and will meet us in a billon years or more , when its been proved that all and every thing is moving away from the earth and expanding, so someone must be wrong.

    Reply
  6. Linda Fowler says:
    2 years ago

    God is a magnificent Creator!

    Reply
  7. Manuel Ochoa says:
    2 years ago

    Picture this, planets develop equally. It took the world millions of years to form no? Now lets look at an object millions of light years away. Wouldnt that mean that the light we see is millions of years old? It took the image millions of years to get here. The planet would still develop while the light is traveling. They could possibly be as developed as us by now for all we know. Right?

    Reply
  8. Manuel Ochoa says:
    2 years ago

    Lets say we populate a planet 1 light year away. Does that when one planet observes the other they would see an image from a year back since it take light a year to travel?

    Reply
  9. Kishanth Koushik says:
    2 years ago

    imagine if you had instant teleportation there that'd be cool!

    Reply
  10. reckit ralph says:
    2 years ago

    Surely with the big bang theory they have looked for a large amount of early galaxy's to try to pin point exactly where it happened .

    Reply
  11. topgeardel says:
    2 years ago

    So silly. We sound so "impressive" talking about the Infinite. Big Bang? Are you sure? The Earth isn't even a grain of sand in the ocean when compared to the known, let alone unknown Universe.

    Reply
  12. Adam Kucharski says:
    2 years ago

    Wow!

    Reply
  13. Guniss Seecharan says:
    2 years ago

    Do you guys know what you are talking about or just relying on previous assumptions that the universe Began with a Big Bang and everything else is naturally assume to be guided by this theory..you all are so wrong.one day after my time and years to come it will be proven that the Big Bang never happened but what actually happened was the formation of dark matter fist throughout a large part of the universe then ,which went on to become so saturated with energy that it started simultaneous process of combustion creating sparks of gas and dust that went on to become galaxies.thus the trillions of galaxies we have today and this process of the formation of dark matter continues outside the un observable universe and this process of combustion continues to give birth to galaxies and the expansion of the galaxies. And btw how it is that one day actually 13.8 billion years ago that the Big Bang decided to happen,why not 20 billions years ago or why not 10 billion years ago. We are only speaking stupidness that the universe began 13.8 billion years ago because that’s how long light from the furthest point has taken to reach us.what make us think that the earth is the center of everything .no. Galaxies are still being born today and it’s nit because of one Big Bang but it makes more sense that sometimes is causing the universe to expand and move away from us and that something is dark matter.and dark matter is causing more births if new galaxies.its just we can’t see that far out as yet but we will soon one day.thx

    Reply
  14. Juan Carlos Montiel Perez says:
    2 years ago

    In spanihs please!

    Reply
  15. Punnasa Mamao says:
    2 years ago

    Wow !

    Reply
  16. John says:
    2 years ago

    What if Mars has giant spiders living under the surface and they love eating bananas

    Reply
  17. Leslie Killam says:
    2 years ago

    Amazing.

    Reply
  18. Secret Name says:
    2 years ago

    They found the Doctors Galaxy.

    Reply
  19. David Stapley says:
    2 years ago

    Brilliant thanks

    Reply
  20. Fortydroid says:
    2 years ago

    I love the telescope names though

    Reply
  21. Chief Seadawg says:
    2 years ago

    Can't wait for the ELT to start taking images in 2025. It promises to be a truly stunning observatory.

    Reply
  22. ej napa says:
    2 years ago

    What a load of garbage. Anyone believing this shit needs to be certified totally programmed.

    Reply
  23. Roscoe Brown says:
    2 years ago

    This makes me feel Puny ! Like we live on a grain of sand on a beach and the nearest talking grain of sand is 20 miles down the the beach under a grunion thats about ready to be eaten by a seagull so its too busy to talk right now Do we really want to deal with that ? Going all that way to find out they have issues ? Well DO WE????

    Reply
  24. Renae A. says:
    2 years ago

    Look up GN-Z11. is the newest most distant Galaxy ever discovered redshift of 11.1 I believe

    Reply
  25. George Kanev says:
    2 years ago

    The age of universe depends by our ability of penetration to “see” deeply and deeply in the over space i.e. by our instruments for observation only:
    First empty space doesn’t exist and if we sink into the space of atom and become part of it, then size of nucleus will increases almost to the size of first electronic orbit, so the atom will looks very differently than the Rutherford dispersing and more and more will looks like a galaxy…why? see USM www.kanevuniverse.com According to this theory the galaxies in our space are atoms (nuclei) in the over space…why it is so and what really are this two spaces You can see on the site. So when we observe some extremely phenomenon in our space of galaxies, we need always to imagine the processes in our atoms space and that are quantum activation, collisions between atoms and nuclear particles, swallowing and radiation of waves, which have frequency in the over space in accordance with efficient of time connection between the spaces, see part II USM www.kanevuniverse.com That is in force about the decision on the age of the galaxies which we observe from our position of observation the Sun and it is means that firstly we must to decide whether there are some energy stimulation in accordance with above and then to decide which galaxy is older and which is younger.
    How much we penetrate within the over space where according to Undivided Structure of the Matter www.kanevuniverse.com galaxies in our space are atoms (nuclei) on the over space? The answer is: ~〖10〗^9 [light years].〖10〗^18 [cm]=〖10〗^27 [cm]→[divided by the constant of time,see part II USM]
    →(〖10〗^27 [cm])/(〖10〗^31 [folds] )=〖10〗^(-4) [cm]
    Or we penetrate only one micrometer 〖10〗^(-6) [m] within the over space! G.Kanev

    Reply
  26. Arthur Rogers says:
    2 years ago

    Are they looking at our place

    Reply
  27. Anti-Gylala Community Member says:
    2 years ago

    When you realize this video was made in 2010

    Reply
  28. Time Bandit says:
    2 years ago

    They never said how far it is! Huge let down.

    Reply
  29. milo lee says:
    2 years ago

    Man…some of the words used in this video!..
    I tried looking up some of these words.first word I picked up?.. Spectroscopy.
    Took me sooo damn long to type the word,that I gave up!
    I'll stick with earth,moon and the sun for now!
    Peace

    Reply
  30. John Marston says:
    2 years ago

    Imagine if that galaxy somehow still exists and theres life there being like ”the milky way is the furthest away galaxy ever.

    Reply
  31. Drexel Morrison says:
    2 years ago

    VLT VATICAN'S LUCIFER TELESCOPE,MOST POWERFUL IN THE WORLD WHY DO THEY HAVE IT ? WHAT ARE THEY LOOKING AT,? ENOCH'S WATCHERS.????

    Reply
  32. ADE 1960 ehrh says:
    2 years ago

    I bet the inhabitants of that galaxy don't consider it the farthest!

    Reply
  33. rancid sausage says:
    2 years ago

    What i dont get is the furthest we can see is the so called start of the visable universe but what about further out where we cant see? Wouldnt that be earlier? They say that there is plenty of universe outside of our visible universe so why does astronomy always contradict itself?

    Reply
  34. Christoph Messner says:
    2 years ago

    So when it is 13 billion light years away and we look into the other direction also 13 billion light years, is the universe 26 billion light years wide or do we see the sane galaxy in the other direction?

    Reply
  35. Le Michael says:
    2 years ago

    nhung thien ha mo rong, va gop lai voi' nhung thien ha khac', nhung thien ha dieu co' lo den o trung tam de don dep nhung~ he sao sap' chet', va ngoai`ria` dai thien ha` tao ra he sao moi'
    nhung he sao do' dang' va ong troi` sky tao ra nhung he sao hap' thu vat chat' toi' hinh thanh` he sao,va` the' xoay vong va di vao` tam lo den cua thien ha` va` chet',ong troi tao ra he sao 7 ngay`

    Reply
  36. Jeevan M Adyapady says:
    2 years ago

    waw amazing

    Reply
  37. P T says:
    2 years ago

    👽: "Good luck, humans. Good guess, btw."

    Reply
  38. Fred Postma says:
    2 years ago

    The universe started when i was born 01091963

    Reply
  39. Fred Postma says:
    2 years ago

    They know So much about it nowadays; amazing

    Reply
  40. Tom Meyers says:
    2 years ago

    The Most po0py sidewalks in California…. So Far

    Reply
  41. Abcde Kh says:
    2 years ago

    sophan allah

    Reply
  42. 11B10 Inf says:
    2 years ago

    Theory..
    Conjecture, speculation, supposition, ect…!
    No one in this world was witness to anything 13.5 billion years ago.
    That fact still remains that you know nothing at all about the universe and its origin. What you say today, is bullshit tomorrow. That's why encyclopedias are extinct. As humans soon will be. Thank the stars.

    Reply
  43. Bennelyn Matudan says:
    2 years ago

    Um its actually now Gnz-11 a galaxy with the redshift of z= 13.96

    Reply
  44. 1Galan says:
    2 years ago

    There was no big bang lol

    Reply
  45. jessie pengyasen says:
    2 years ago

    One thing i never believe is the big bang theory,anyway its only a theory of an idiot guy…

    Reply

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