Sci/Tech Rosetta results: Comets 'did not bring water to Earth'

tom_mai78101

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Scientists have dealt a blow to the theory that most water on Earth came from comets.

Results from Europe's Rosetta mission, which made history by landing on Comet 67P in November, shows the water on the icy mass is unlike that on our planet.

The results are published in the journal Science.

The authors conclude it is more likely that the water came from asteroids, but other scientists say more data is needed before comets can be ruled out.

Since August, the Rosetta probe has been orbiting Comet 67P/Churyumov-Gerasimenko, and on 12 November its lander, Philae, made a historic touchdown on the object's surface.

Although the robot's batteries ran out soon after setting down, it gathered a wealth of scientific data, and the Rosetta "mothership" continues to analyse the wandering "ice mountain".

This unprecedented, close-up look at a comet is helping scientists to answer the fundamental question of whether a bombardment of these primitive bodies brought water to Earth billions of years ago.

 
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tom_mai78101

The Helper Connoisseur / Ex-MineCraft Host
Staff member
It's a theory, it was never a fact from the beginning, so it's not new.
 

Varine

And as the moon rises, we shall prepare for war
Nor is it accurate; Rosetta failed to work as planned. They concluded nothing other than there is more heavy water in a particular spot of a particular comet - and they failed to even do that right because it fell in the wrong spot and now they can't find it.
 
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  • tom_mai78101 tom_mai78101:
    Hmm, about the Headline News, I noticed threads are being moved into the subforum (Health News, Environmental News, etc.). When that happens, the TH Forum Home page loses the articles, and instead would show old articles posted 1 or 2 weeks ago.
  • tom_mai78101 tom_mai78101:
    What do we do with the Home page?
  • Ghan Ghan:
    I added those forums to the filter for that widget.
    +1
  • tom_mai78101 tom_mai78101:
    Oh nice. They're back. Thanks.
  • tom_mai78101 tom_mai78101:
    Now I think it makes more sense for me to put news in their own subforums, without worry.
  • The Helper The Helper:
    Awesome Ghan thanks! I was purposely not moving the first 15 news articles in Headline news to the different subforums but I guess I don't have to do that now?
  • tom_mai78101 tom_mai78101:
    Question: Is there a way to remove thread redirects? It creates a copy of the moved thread and takes up space, and I am leaning towards wanting to remove them in the Headline News. But if they have an expiration date, I guess I'm fine with it.
  • The Helper The Helper:
    If you move a thread please leave a permanent redirect. You can delete any redirects after 6 months. The redirects are left to help Search Engines find the moved content.
  • tom_mai78101 tom_mai78101:
    What if you move the permanent redirect, not the thread?
  • The Helper The Helper:
    I think that works but I have not messed with it. You can delete redirects though if you have to that will not delete the original thread
  • The Helper The Helper:
    if a redirect ends up in the same forum as the post it goes to though I think the redirect drops or fails or something but they are not bugged out and when you are working on an indirect the original post is safe.
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    Happy Early Friday :)
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    Fun Friday for me
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    Happy Fun Friday to all.
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  • tom_mai78101 tom_mai78101:
    I found out you can't delete nor hide redirect links to existing threads. It will just stay there. I have no choice now but to start moving thread redirects to News Archive.
  • The Helper The Helper:
    That is not the way that it works for me I can delete redirects you just have to hit refresh sometimes big deletes will take a while as long as moves\
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    You don't have to do that you can just leave stuff there in headline news for up to a year it was already down to like 8 months there is no rush.

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