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http://simulator.down2earth.eu/planet.html?lang=en http://simulator.down2earth.eu/planet.html?lang=en According to this calculator you get a 446km diameter cra

by hu3 3y ago

http://simulator.down2earth.eu/planet.html?lang=en http://simulator.down2earth.eu/planet.html?lang=en According to this calculator you get a 446km diameter crater if you input: - 15km asteroid diameter - 90º Angle - 80km/s - Dense Rock asteroid - Hitting on Water at level 10m

aintgonnatakeit 3y ago
FYI these are the maximums you can input to get the largest possible crater using this simulator.
- hu3 3y ago
  Yeah I had to max inputs on that calculator. Pretty wild.
- irrational 3y ago
  We’re going to need a bigger calculator.
- FireBeyond 3y ago
  ... not great, not terrible.
  - jacquesm 3y ago
    Hehe. That's a great scene. Meanwhile, I think it was big enough to do the job.
jvm___ 3y ago
15kms at 80km/s So, for a quarter of a second or less it was touching the ground and almost double the height of Everest (8.8kms).
- Cthulhu_ 3y ago
  I wonder if just the atmosphere would've caused it to explode already. At those speeds it'd go through the atmosphere within a second though.
  - Filligree 3y ago
    It would be exploding for the duration, but at that size you just can’t get through much of the asteroid before it touches the ground.
  - dylan604 3y ago
    That's why "dense rock" setting was used. Imagine if they had selected "solid iron". I don't know what settings are available for the calculator used, but "loose bunch of rocks" would probably fall apart in the atmo, dense rock would hold together until impact, and solid iron would just keep burrowing further
    - kijin 3y ago
      A 15km chunk of solid iron, now that's the kind of bunker buster you throw around in an interplanetary war. Would it do more damage to the surface than a rocky asteriod of comparable mass, though? If it burrows deeper, it means it transfers more of its energy to the mantle and core of the Earth, and less to the crust. It will be like a full metal jacket bullet that goes straight through the target and transfers most of its energy to the wall on the other side, versus a regular bullet that tumbles and expands as soon as it hits the target.
      - davidwritesbugs 3y ago
        Throwing Meteors as interplanetary weapons was a storyline from The Expanse books/TV series if I recall.
        jvm___ 3y ago
        Deorbiting a multi-million dollar satellite as a weapon was the plot of of a Tom Clancy book. The bad guy was going to launch a nuke from his ship and the only thing that could get there in time was the super special satellite.
- tomatotomato37 3y ago
  It makes me wonder what an impactor like that would do if intercepted by the moon; that may be even enough mass to cause a temporary ring field just from the debris
  - _whiteCaps_ 3y ago
    If you wonder about things like that, you might want to read Seveneves by Neal Stephenson.
- jacquesm 3y ago
  And it still only went down to about twice its diameter. Makes you really respect how tough the Earth's crust is.
  - jvm___ 3y ago
    The deepest borehole, about the size of a coffee can, is only 12km deep before the tooling started melting - can't drill with a liquid bit... So 30km down it would be hitting liquid rock and a lot of heat.
    - jacquesm 3y ago
      Yes, the mantle is about that thick. And much thinner in some places even. Which makes me wonder how they detected this crater and what the crater is formed in. This is the relevant bit from the article: "Between 1995 and 2000, Tony Yeates suggested magnetic patterns beneath the Murray Basin in New South Wales likely represented a massive, buried impact structure. An analysis of the region’s updated geophysical data between 2015 and 2020 confirmed the existence of a 520km diameter structure with a seismically defined dome at its centre. The Deniliquin structure has all the features that would be expected from a large-scale impact structure. For instance, magnetic readings of the area reveal a symmetrical rippling pattern in the crust around the structure’s core. This was likely produced during the impact as extremely high temperatures created intense magnetic forces." But they would not able to verify that at that depth without a lot of drilling and the end of the article suggests that they have yet to do so.
m3kw9 3y ago
Would be wild if aliens had cameras on every planet and one day decides to show us what this looked like
- Cthulhu_ 3y ago
  Little grey dudes sitting us down in the slideshow room to show their holiday pictures from a few million years ago, lol. "And this is when ⌘⑩⌖⌦ nearly got eaten by a dinosaur!"

by hu3 3y ago

aintgonnatakeit 3y ago

FYI these are the maximums you can input to get the largest possible crater using this simulator.

hu3 3y ago
Yeah I had to max inputs on that calculator. Pretty wild.
irrational 3y ago
We’re going to need a bigger calculator.
FireBeyond 3y ago
... not great, not terrible.
- jacquesm 3y ago
  Hehe. That's a great scene. Meanwhile, I think it was big enough to do the job.

jvm___ 3y ago

15kms at 80km/s So, for a quarter of a second or less it was touching the ground and almost double the height of Everest (8.8kms).

Cthulhu_ 3y ago
I wonder if just the atmosphere would've caused it to explode already. At those speeds it'd go through the atmosphere within a second though.
- Filligree 3y ago
  It would be exploding for the duration, but at that size you just can’t get through much of the asteroid before it touches the ground.
- dylan604 3y ago
  That's why "dense rock" setting was used. Imagine if they had selected "solid iron". I don't know what settings are available for the calculator used, but "loose bunch of rocks" would probably fall apart in the atmo, dense rock would hold together until impact, and solid iron would just keep burrowing further
  - kijin 3y ago
    A 15km chunk of solid iron, now that's the kind of bunker buster you throw around in an interplanetary war. Would it do more damage to the surface than a rocky asteriod of comparable mass, though? If it burrows deeper, it means it transfers more of its energy to the mantle and core of the Earth, and less to the crust. It will be like a full metal jacket bullet that goes straight through the target and transfers most of its energy to the wall on the other side, versus a regular bullet that tumbles and expands as soon as it hits the target.
    - davidwritesbugs 3y ago
      Throwing Meteors as interplanetary weapons was a storyline from The Expanse books/TV series if I recall.
      - jvm___ 3y ago
        Deorbiting a multi-million dollar satellite as a weapon was the plot of of a Tom Clancy book. The bad guy was going to launch a nuke from his ship and the only thing that could get there in time was the super special satellite.
tomatotomato37 3y ago
It makes me wonder what an impactor like that would do if intercepted by the moon; that may be even enough mass to cause a temporary ring field just from the debris
- _whiteCaps_ 3y ago
  If you wonder about things like that, you might want to read Seveneves by Neal Stephenson.
jacquesm 3y ago
And it still only went down to about twice its diameter. Makes you really respect how tough the Earth's crust is.
- jvm___ 3y ago
  The deepest borehole, about the size of a coffee can, is only 12km deep before the tooling started melting - can't drill with a liquid bit... So 30km down it would be hitting liquid rock and a lot of heat.
  - jacquesm 3y ago
    Yes, the mantle is about that thick. And much thinner in some places even. Which makes me wonder how they detected this crater and what the crater is formed in. This is the relevant bit from the article: "Between 1995 and 2000, Tony Yeates suggested magnetic patterns beneath the Murray Basin in New South Wales likely represented a massive, buried impact structure. An analysis of the region’s updated geophysical data between 2015 and 2020 confirmed the existence of a 520km diameter structure with a seismically defined dome at its centre. The Deniliquin structure has all the features that would be expected from a large-scale impact structure. For instance, magnetic readings of the area reveal a symmetrical rippling pattern in the crust around the structure’s core. This was likely produced during the impact as extremely high temperatures created intense magnetic forces." But they would not able to verify that at that depth without a lot of drilling and the end of the article suggests that they have yet to do so.

m3kw9 3y ago

Would be wild if aliens had cameras on every planet and one day decides to show us what this looked like

Cthulhu_ 3y ago
Little grey dudes sitting us down in the slideshow room to show their holiday pictures from a few million years ago, lol. "And this is when ⌘⑩⌖⌦ nearly got eaten by a dinosaur!"