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Youngest Galactic Supernova Found, But No Aliens

Simon Howes writes "After searching for decades, astronomers have found a supernova in our galaxy! So it wasn't little green men we were waiting for. It's located very near the center of the galaxy, about 28,000 light years away, and it's only at most about 140 years old. Quote from Bad Astronomy: 'If you're wondering what all the buzz has been about the past few days over a NASA discovery, then wait no longer. No, it's not aliens or an incoming asteroid. Instead, it's still very cool: astronomers have found the youngest supernova in the Milky Way.'" FiReaNGeL contributes a link to coverage on e! Science News; I think Wired's account of the super-hyped tele-press-conference is the funniest.

36 of 184 comments (clear)

  1. 140 Years old by Kingrames · · Score: 5, Funny

    Younger than America, that's actually really impressive.

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    If you can read this, I forgot to post anonymously.
    1. Re:140 Years old by Azaril · · Score: 5, Insightful

      It would be, if wasn't actually 28140 years old.

    2. Re:140 Years old by Tango42 · · Score: 4, Informative

      Time dilation? We're talking about light, if you can define time dilation for light-like observers at all (which you can't, really) it would be infinite. The light is 0 years old. So, yeah, I guess that qualifies as less than 28140...

  2. Doesn't make sense.... by Mikkeles · · Score: 5, Insightful

    If it's 140 yrs old, then it can't be farther than 140 ly for us to know about it ??!!?

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    Great minds think alike; fools seldom differ.
    1. Re:Doesn't make sense.... by ChrisPaulsworth · · Score: 2, Informative

      You beat me to it!!!! Nothing travels faster than light, wouldn't it have to be 28,140 years old???

    2. Re:Doesn't make sense.... by Anonymous Coward · · Score: 3, Informative

      RTFA

      This makes the original explosion the most recent supernova in the Galaxy, as measured in Earth's time-frame (referring to when events are observable at Earth).

    3. Re:Doesn't make sense.... by kalirion · · Score: 4, Insightful

      We are seeing a 140 year old supernova. Just like someone looking at my baby pictures will be seeing a 3 month old kalirion.

    4. Re:Doesn't make sense.... by liquiddark · · Score: 3, Insightful

      Relativity actually defines, in a sense, the age of an event relative to your own perspective. The "causal" perspective is the only one that really matters. From our causal perspective, the supernova is 140 years old.

    5. Re:Doesn't make sense.... by Jesus_666 · · Score: 4, Funny

      They used a very fast telescope.

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      USE HOT GRITS WITH STATUE OF NATALIE PORTMAN (NAKED AND PETRIFIED)
    6. Re:Doesn't make sense.... by Anonymous Coward · · Score: 2, Funny

      Wait a minute:

      1) Nothing is faster than light
      2) light is faster than sound
      therefore
      3) Nothing is faster than sound!

    7. Re:Doesn't make sense.... by hardburn · · Score: 2, Informative

      In astrophysics, you generally speak as if something doesn't happen until the light cone hits you. It's a lot more convenient that way.

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      Not a typewriter
  3. distance vs age? by forsetti · · Score: 3, Insightful

    Wait -- if it is 28,000 light years away, but only 140 years old .... does that mean we won't see it for another 27,860 years? Or, did it actually occur 28,140 years ago and we could see it 140 years ago?

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    10b||~10b -- aah, what a question!
    1. Re:distance vs age? by theelectron · · Score: 4, Informative

      After reading the articles, you are correct. It is actually over 26,000 years old, we were just able to see in in the last 140 years.

    2. Re:distance vs age? by rossdee · · Score: 5, Insightful

      In space, all news is old news.

    3. Re:distance vs age? by ZeroExistenZ · · Score: 3, Interesting

      This is just in! A first alien message! It's estimated to be 500,000 light years away and even more radio year.

      After years of crunching our most heavy quantum computers, we decoded;
      "HELP. WE ARE THE LAST KNOWN SURVIVING SPECIES IN THIS UNIVERSE. HELP. THEY FINALLY HAVE CREATED WEAPONS OF MASS... - NO CARRIER.".

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      I think we can keep recursing like this until someone returns 1
  4. Re:Um... by geekoid · · Score: 2, Informative

    As with all these article, it is talking when the light became available for us here on Earth to see.

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    The Kruger Dunning explains most post on /. http://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect
  5. It's easy to detect things faster than TSOL by Anonymous Coward · · Score: 3, Funny

    All you need to do is divide the light years away by the smarmy posts about the speed of light in /.

    In our case, 28000 ly/200 smartass speed of light posts = 140 years ago.

    The more posts we get, the later it happens. Pretty soon, NASA will be able to predict the future! (Don't ask me about the math in that)

  6. Re:zzzzzzzz... by morgan_greywolf · · Score: 2, Funny

    Wake me when they've discovered how Everything evolved from Nothing.
    No, no, everything exploded from Nothing. Get it right. Sheesh.
  7. Re:zzzzzzzz... by NotBornYesterday · · Score: 4, Funny

    That issue has been solved! Scientists recently found the missing link between inanimate, lifeless matter and the first primitive protozoa: an Anonymous Coward fossil.

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    I prefer rogues to imbeciles because they sometimes take a rest.
  8. FTA "As measured in Earth's time frame" by loose+electron · · Score: 4, Informative

    "The supernova explosion occurred about 140 years ago, making it the most recent supernova in the Milky Way as measured in Earth's time frame. Previously, the last known galactic supernova occurred around 1680, based on studying the expansion of its remnant Cassiopeia A."

    What that statement means is from the observational perspective of the earth. If it is a 1000 light years away, and we see the event here and now, then it occurred now "as measured in Earth's Time Frame" but actually from the distance, we know the event occurred a 1000 years ago.

    --
    www.effectiveelectrons.com "chips that work" Analog, RF, Mixed Signal
  9. Not so overdue by EricWright · · Score: 3, Interesting

    Several different "experts" have predicted that the Milky Way should have at least one supernova every 100 years. Of course, the question has been why we hadn't seen one since 1604. I guess this ... ahem, sheds new light on the issue. As Dr. Reynolds puts it, there's too much interstellar 'gunk' out there.

    Disclosure: Dr. Reynolds was co-chair of my thesis committee, but I was doing computational astrophysics, not observational.

    1. Re:Not so overdue by photonic · · Score: 2, Interesting

      The rate I heard was once every 30 years. This is the kind of explosion that LIGO and others are waiting for, since this would be a pretty easy target for observing gravitational waves. This one was at 28k lightyear or about 8 kiloparsec. LIGO has been running last year with a 'detection horizon' of about 15 Megaparsec, so this one was really at spitting distance. This is the reason why the gravitational wave community does an effort to keep at least one interferometer running at all times by scheduling the planned downtime. Even the less sensitive GEO could hear something if it blows up in our galaxy. They didn't observe anything so far (they estimate a chance of 1/100 to 1/10 per year) but this will get better after the current upgrades: increasing the horizon with a factor 10 will increase the reachable volume (and thus detection rate) by a factor of 1000.

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      karma police: arrest this man, he talks in maths; he buzzes like a fridge, he's like a detuned radio. [radiohead]
  10. Re:zzzzzzzz... by spun · · Score: 2

    Simple. Nothing is just a definition. By positing Nothing, it's opposite, Everything, must also exist. In true Nothingness, there are no definitions or boundaries, but there is also no lack of definitions or boundaries because the lack of something is a definition or boundary. The true void contains every possibility as well as the lack thereof. Duh.

    --
    - None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
  11. composite image by Anonymous Coward · · Score: 2, Interesting

    That composite image looks strangely like the firefox logo.

  12. NASA Is Wrong - Crab Nebula Is "Younger" by cybrpnk2 · · Score: 3, Informative

    NASA is wrong in saying this new supernova is the "youngest" - it is actually just the MOST RECENTLY OBSERVED. The Crab Nebula supernova has it beat as "youngest", exploding occuring only 6500 years ago (and observed less than 300 years ago, in 1731) instead of exploding 28,000 years ago (and observed in 2008).

    1. Re:NASA Is Wrong - Crab Nebula Is "Younger" by TigerNut · · Score: 4, Informative

      The supernova associated with the Crab Nebula was observed and recorded by the Chinese and the Arabs in 1054. It was only in 1731 that the nebula itself was charted by Western astronomers and even later that it became M1 in Messier's catalog.

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      Less is more.

  13. Relativity of simultaneity by amstrad · · Score: 3, Interesting

    People need to read about relativity of simultaneity before trying to be smart asses and making laymen comments about events at large distances.

    1. Re:Relativity of simultaneity by had3l · · Score: 2, Interesting

      I'm sorry, we are all observing the event from Earth. Since we all have a common point of observation in space time, we can actually make comments about when the event took place.

      If we didn't take Earth to be our common point of reference, then it would be impossible to come up with any numbers regarding the age of the universe from example. When inquired about when the big bang happened a smart ass scientist could respond: "10 billion or 17 billion years ago, depending from where you are looking."

  14. I came in here to burn some mod points... by SatanicPuppy · · Score: 5, Insightful

    And I'm posting because there is no "Moron" mod.

    This is seriously one of the stupidest discussions I've ever seen on /. Every post is either repeating something from the article, making a pedantic loser comment on the "140 years" line, or explaining to the morons the whole concept of "Frame of Reference."

    It's what I'd expect from a society where people prank call a scientific conference. Nice one, guys.

    --
    ad logicam Claiming a proposition is false because it was presented as the conclusion of a fallacious argument.
    1. Re:I came in here to burn some mod points... by bark76 · · Score: 2, Funny

      /me calls CERN

      me: Excuse me. Is you Large Hadron Collider running?

      CERN: Why yes, it is.

      me: Well, you better go catch it.

  15. Re:Real issue here by morgan_greywolf · · Score: 2, Interesting

    Why did some asshat call in to the NASA teleconference and ask about moon crickets, and when the hell did that become a racial slur?
    I dunno. You'd have to ask those stupid moon crickets that question.

  16. Seen age vs. "actual" age by Pausanias · · Score: 2, Interesting
    I think the point here is that we are recording digital images of a star as it was only 140 years after it exploded. As opposed to the crab, for which we have digital images 6500 years after it exploded. Regardless of how old the supernova "actually" is now, what matters is that the data we have shown it at age 140. Whereas for the crab, the data we have show it at age 6500.

    NASA is wrong in saying this new supernova is the "youngest" - it is actually just the MOST RECENTLY OBSERVED. The Crab Nebula supernova has it beat as "youngest", exploding occuring only 6500 years ago (and observed less than 300 years ago, in 1731) instead of exploding 28,000 years ago (and observed in 2008).
  17. Re:zzzzzzzz... by peragrin · · Score: 3, Funny

    Wake me when they've discovered how Everything evolved from Nothing.

    No, no, everything exploded from Nothing. Get it right. Sheesh.</quote><br>Well first a daddy universe explodes into a momma universe and new life is formed. 9 billion years later that little universe thinks it is the center of everything.

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    i thought once I was found, but it was only a dream.
  18. Dupe! by STrinity · · Score: 4, Funny

    First posted August 1868:

    Natural philosophers studying the heavens have spotted a stellar nova some 7000 light leagues distance. The light from this exploding star emanated some 24000 years before the birth of Our Lord. This has caused some confusion among scholars, as this would require the star to have combusted some 20 millennia before the creation of the Universe. Philosophers are also unable to theorize what may have made the star explode, though one possibility is a build-up of gas deep within the star's anthracite core.

    This is certainly the biggest bang since Mr. Wilkes' curtain call during "Our American Cousin".

    --
    Les Miserables Volume 1 now up with my reading of
  19. 28140 years old by mi · · Score: 2, Insightful

    The write-up says:

    about 28,000 light years away, and it's only at most about 140 years old

    If we are observing it (the light, that left the start 28000 years ago) now, the start must be about 28140 years old...

    --
    In Soviet Washington the swamp drains you.
  20. Thanks a lot... by Acheron · · Score: 3, Funny

    Now every time I read a /. headline, I'm going to be adding "But No Aliens" to it in my head. *sigh*