What’s the deepest we’ve ever dug into the Earth? (Thinkstock)
What’s the deepest we’ve ever dug into the Earth?
Lexile

You asked us a question. "What's the deepest we've ever dug into the Earth?"
 
The deepest hole we have ever carved out is just 9 inches across.
 
It was started by scientists in 1970. It took more than 20 years to dig the record-holding hole.
 
How low did we go?
 
Can we get a drum roll? A whopping 0.2% of the distance to the center of the planet.
 
That is right. The 7.5-mile-deep Kola Borehole in Russia barely managed to scratch the Earth's surface. It never made it past the outermost layer of our planet.
 
Super high temperatures stopped the Russian scientists from going any farther.
 
They found some pretty cool things along the way. One of those things was free water. It was deeper than they ever thought it could possibly exist.
 
And they found 2-billion-year-old fossils. They were from single-celled marine plants found 4 miles below the Earth's surface.
 
An international team of scientists is hoping to go deeper.
 
But it has a big $1 billion price tag. It also has huge engineering roadblocks. The goal is to go where no one has gone before. The mantle.
 
Some of our biggest questions about the origins and evolution of Earth could get answers.
 
SO WHAT ARE WE WAITING FOR?!!
 
Oh, yeah. That is right. We are waiting for a billion dollars and better technology. Get on that science!

Filed Under:  
Assigned 437 times
CRITICAL THINKING QUESTION
Why did it take more than 20 years to dig the deepest hole?
Write your answers in the comments section below


COMMENTS (100)
  • miked-
    12/17/2015 - 12:21 p.m.

    I wonder if we can go deeper than that.

  • kadew-
    12/17/2015 - 12:23 p.m.

    wow I thought that we went to the core of the earth but I guess not

    • kevinx-tam
      1/04/2016 - 02:06 p.m.

      Yeah me to ????????

    • marlonx-tam
      1/05/2016 - 01:05 p.m.

      i also thought that.

  • tylerm-
    12/17/2015 - 12:24 p.m.

    I thought the hole was going to be gigantic.

    • huntero-luk-luk
      1/28/2016 - 03:33 p.m.

      Me too I guess not.

  • kadenw-
    12/17/2015 - 12:25 p.m.

    Russia

  • jackg-
    12/17/2015 - 12:27 p.m.

    Wow that hole is huge!

  • jadenb-jac
    12/18/2015 - 05:29 p.m.

    I think that this expirence for them must have been amazing. How ever I still don't think its possible to go to the mantle. The only way is to get a super machine that digs really fast and can survive very hot temperatures.

  • anthony3-war
    12/22/2015 - 01:00 p.m.

    This article was very interesting. I didn't know that we could only dig a small fraction of the crust, it is exciting to think that we might be able to go to the mantle. The core is very hot so they'll have to come up with something new so we can go down into the earth and explore.

Take the Quiz Leave a comment
ADVERTISEMENT