2985: Craters - Revision history

172.70.174.96: Transcript is already complete, couldn't find any errors.

2025-04-06T22:16:03Z

Transcript is already complete, couldn't find any errors.

CalibansCreations: /* Explanation */

2024-12-09T12:47:28Z

‎Explanation

Xurkitree10: /* Explanation */

2024-09-28T09:18:24Z

‎Explanation

172.71.154.77: /* Explanation */ changed Yucatan Peninsula to Yucatán Peninsula

2024-09-20T16:14:18Z

‎Explanation: changed Yucatan Peninsula to Yucatán Peninsula

172.69.194.63: /* Explanation */

2024-09-17T11:04:10Z

‎Explanation

BunsenH: /* Explanation */ could be many small amounts of impulse rather than just one impulse

2024-09-17T04:34:16Z

‎Explanation: could be many small amounts of impulse rather than just one impulse

172.68.186.128: /* Explanation */

2024-09-16T11:55:17Z

‎Explanation

DKMell: expanded Armageddon

2024-09-16T08:12:43Z

expanded Armageddon

108.162.245.163: /* Explanation */ both

2024-09-16T02:09:38Z

‎Explanation: both

172.70.91.100: Minor edit to improve Chicxulub extinction-of-the-dinosaurs paragraph.

2024-09-15T14:59:52Z

Minor edit to improve Chicxulub extinction-of-the-dinosaurs paragraph.

← Older revision		Revision as of 22:16, 6 April 2025
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	==Transcript==		==Transcript==
−	~~{{incomplete transcript\|Do NOT delete this tag too soon.}}~~

	:[A Venn diagram with two circles.]		:[A Venn diagram with two circles.]

@@ Line 44: / Line 44: @@
 |}
-The {{w|Nastapoka Arc}} was most likely caused by continental plates crashing into each other rather than a meteor impact. However, in the title text Randall believes that it COULD be an actual meteor impact site with enough dedication: he wants to redirect an asteroid into Hudson Bay, which is a bad idea{{Citation needed}}. There is no efficient way to artificially direct asteroids towards Earth, let alone ones large enough to make the appropriate size hole. The {{w|Double Asteroid Redirection Test}} (DART) slightly changed the orbit of one asteroid around another by slamming a spacecraft into the asteroid; doing any more substantial redirection would require applying a great deal of {{w|Impulse (physics)|impulse}} to an asteroid, which has never been done. Moreover, the precision required would be a massive obstacle: a small variance in timing or angle would make the asteroid hit Earth in the wrong manner, at the very least creating an improperly matched hole (for size and shape), with the most likely outcome being to miss the original feature entirely. There is also the potential to slam into nearby populated areas, but some historic circular features are {{w|Nördlingen|themselves populated}} so would suffer directly in the case of a perfect impact. Attempting to do so would be costly and potentially cause massive devastation.
+The {{w|Nastapoka Arc}} was most likely caused by continental plates crashing into each other rather than a meteor impact. However, in the title text Randall believes that it COULD be an actual meteor impact site with enough dedication: he wants to redirect an asteroid into Hudson Bay, which is a bad idea.{{Citation needed}} There is no efficient way to artificially direct asteroids towards Earth, let alone ones large enough to make the appropriate size hole. The {{w|Double Asteroid Redirection Test}} (DART) slightly changed the orbit of one asteroid around another by slamming a spacecraft into the asteroid; doing any more substantial redirection would require applying a great deal of {{w|Impulse (physics)|impulse}} to an asteroid, which has never been done. Moreover, the precision required would be a massive obstacle: a small variance in timing or angle would make the asteroid hit Earth in the wrong manner, at the very least creating an improperly matched hole (for size and shape), with the most likely outcome being to miss the original feature entirely. There is also the potential to slam into nearby populated areas, but some historic circular features are {{w|Nördlingen|themselves populated}} so would suffer directly in the case of a perfect impact. Attempting to do so would be costly and potentially cause massive devastation.
 This idea of directing an asteroid to directly impact the Earth is on some level an inversion of disaster movies like ''Armageddon'', where an asteroid is landed on to destroy or deflect it; ''Armageddon'' was mentioned in [[1740: Rosetta]] and [[2729: Planet Killer Comet Margarita]].

← Older revision		Revision as of 09:18, 28 September 2024
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	==Explanation==		==Explanation==
−	~~{{incomplete\|Created by a LITTLE PRINCE ON A ROCK - Please change this comment when editing this page. Do NOT delete this tag too soon.}}~~
−
	This comic uses a Venn diagram (itself composed of large circles) to classify large circles on the ground into meteor impact craters, "weird circles on the map", and both.		This comic uses a Venn diagram (itself composed of large circles) to classify large circles on the ground into meteor impact craters, "weird circles on the map", and both.

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 ! scope="col" | Explanation
 |-
-|rowspan="4"|Meteor Impact Craters || Northern {{w|Yucatan Peninsula}}|| This refers to the famous {{w|Chicxulub crater}}, where an asteroid ~10 km in diameter struck the Earth 66 million years ago and is widely believed to have caused the extinction of non-avian dinosaurs.
+|rowspan="4"|Meteor Impact Craters || Northern {{w|Yucatán Peninsula}}|| This refers to the famous {{w|Chicxulub crater}}, where an asteroid ~10 km in diameter struck the Earth 66 million years ago and is widely believed to have caused the extinction of non-avian dinosaurs.
 |-
 |{{w|Charlevoix impact structure|Charlevoix Region}}|| Astroblème de Charlevoix, or Charlevoix impact crater.  A 400 million-year-old, 54 km-wide crater which lies partly in the waters of the {{w|St. Lawrence River}} and stretches halfway between {{w|Quebec City}} and the mouth of the {{w|Saguenay River}}.

@@ Line 12: / Line 12: @@
 {{incomplete|Created by a LITTLE PRINCE ON A ROCK - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
-This comic uses a Venn diagram to classify large circles on the ground into meteor impact craters, "weird circles on the map", and both.
+This comic uses a Venn diagram (itself composed of large circles) to classify large circles on the ground into meteor impact craters, "weird circles on the map", and both.
 {| class=wikitable

@@ Line 46: / Line 46: @@
 |}
-The {{w|Nastapoka Arc}} was most likely caused by continental plates crashing into each other rather than a meteor impact. However, in the title test Randall believes that it CAN be an actual meteor impact site with enough dedication: he wants to redirect an asteroid into Hudson Bay, which is a bad idea{{Citation needed}}. There is no efficient way to artificially direct asteroids towards Earth, let alone ones large enough to make the appropriate size hole. The {{w|Double Asteroid Redirection Test}} (DART) slightly changed the orbit of one asteroid around another by slamming a spacecraft into the asteroid; doing any more substantial redirection would require applying a large {{w|Impulse (physics)|impulse}} to an asteroid, which has never been done. Moreover, the precision required would be a massive obstacle: a small variance in timing or angle would make the asteroid hit Earth in the wrong manner, at the very least creating an improperly matched hole (for size and shape), with the most likely outcome being to miss the original feature entirely. There is also the potential to slam into nearby populated areas, but some historic circular features are {{w|Nördlingen|themselves populated}} so would suffer directly in the case of a perfect impact. Attempting to do so would be costly{{Citation needed}} and potentially cause massive devastation.{{Citation needed}}
+The {{w|Nastapoka Arc}} was most likely caused by continental plates crashing into each other rather than a meteor impact. However, in the title text Randall believes that it COULD be an actual meteor impact site with enough dedication: he wants to redirect an asteroid into Hudson Bay, which is a bad idea{{Citation needed}}. There is no efficient way to artificially direct asteroids towards Earth, let alone ones large enough to make the appropriate size hole. The {{w|Double Asteroid Redirection Test}} (DART) slightly changed the orbit of one asteroid around another by slamming a spacecraft into the asteroid; doing any more substantial redirection would require applying a large {{w|Impulse (physics)|impulse}} to an asteroid, which has never been done. Moreover, the precision required would be a massive obstacle: a small variance in timing or angle would make the asteroid hit Earth in the wrong manner, at the very least creating an improperly matched hole (for size and shape), with the most likely outcome being to miss the original feature entirely. There is also the potential to slam into nearby populated areas, but some historic circular features are {{w|Nördlingen|themselves populated}} so would suffer directly in the case of a perfect impact. Attempting to do so would be costly and potentially cause massive devastation.
 This idea of directing an asteroid to directly impact the Earth is on some level an inversion of disaster movies like ''Armageddon'', where an asteroid is landed on to destroy or deflect it; ''Armageddon'' was mentioned in [[1740: Rosetta]] and [[2729: Planet Killer Comet Margarita]].

@@ Line 39: / Line 39: @@
 |{{w|Crater Lake (disambiguation)|Crater Lake}}||Most likely reference is the {{w|Crater Lake}} that's in Oregon, the deepest freshwater body in the United States, which formed in the {{w|caldera}} of {{w|Mount Mazama}} after it exploded around 7700 years ago.
 |-
-|{{w|Stonehenge}}||{{w|Stonehenge}} is a {{w|megalith}} structure on the {{w|Salisbury Plain}} in England which is famous not only for its historical significance and impressive scale but for {{w|Theories about Stonehenge|stories surrounding its creation and purpose}}.
+|{{w|Stonehenge}}||A {{w|megalith}} structure on the {{w|Salisbury Plain}} in England which is famous not only for its historical significance and impressive scale but also for {{w|Theories about Stonehenge|stories surrounding its creation and purpose}}.
 |-
 |The {{w|Great Blue Hole}}||A large, nearly-circular {{w|Blue hole|marine sinkhole}} off the coast of {{w|Belize}}.
@@ Line 46: / Line 46: @@
 |}
-The title text refers to the {{w|Nastapoka Arc}}, a section of the Hudson Bay shoreline that is almost a perfect circle. This was most likely caused by continental plates crashing into each other rather than a meteor impact. However, Randall believes that it CAN be an actual meteor impact site with enough dedication: he wants to redirect an asteroid into Hudson Bay, which is a bad idea{{Citation needed}}. There is no efficient way to artificially direct asteroids towards Earth, let alone ones large enough to make the appropriate size hole. The {{w|Double Asteroid Redirection Test}} (DART) slightly changed the orbit of one asteroid around another by slamming a spacecraft into the asteroid; doing any more substantial redirection would require applying large {{w|Impulse (physics)|impulse}} to an asteroid, which has never been done. Moreover, the precision required would be a massive obstacle: a small variance in timing or angle would make the asteroid hit Earth in the wrong manner, at the very least creating an improperly matched hole (for size and shape), with the most likely outcome being to miss the original feature entirely. There is also the potential to slam into nearby populated areas, but some historic circular features are {{w|Nördlingen|themselves populated}} so would suffer directly in the case of a perfect impact. Attempting to do so would be costly{{Citation needed}} and potentially cause massive devastation.{{Citation needed}}
+The {{w|Nastapoka Arc}} was most likely caused by continental plates crashing into each other rather than a meteor impact. However, in the title test Randall believes that it CAN be an actual meteor impact site with enough dedication: he wants to redirect an asteroid into Hudson Bay, which is a bad idea{{Citation needed}}. There is no efficient way to artificially direct asteroids towards Earth, let alone ones large enough to make the appropriate size hole. The {{w|Double Asteroid Redirection Test}} (DART) slightly changed the orbit of one asteroid around another by slamming a spacecraft into the asteroid; doing any more substantial redirection would require applying a large {{w|Impulse (physics)|impulse}} to an asteroid, which has never been done. Moreover, the precision required would be a massive obstacle: a small variance in timing or angle would make the asteroid hit Earth in the wrong manner, at the very least creating an improperly matched hole (for size and shape), with the most likely outcome being to miss the original feature entirely. There is also the potential to slam into nearby populated areas, but some historic circular features are {{w|Nördlingen|themselves populated}} so would suffer directly in the case of a perfect impact. Attempting to do so would be costly{{Citation needed}} and potentially cause massive devastation.{{Citation needed}}
-This idea of directing an asteroid to directly impact the Earth is on some level an inversion of disaster movies like ''Armageddon'', where an asteroid is landed on to destroy or deflect it. ''Armageddon'' has been discussed before on xkcd.
+This idea of directing an asteroid to directly impact the Earth is on some level an inversion of disaster movies like ''Armageddon'', where an asteroid is landed on to destroy or deflect it; ''Armageddon'' was mentioned in [[1740: Rosetta]] and [[2729: Planet Killer Comet Margarita]].
 ==See also==

@@ Line 27: / Line 27: @@
 |{{w|Chesapeake Bay Impact Crater|Chesapeake Bay}}||A crater buried beneath the mouth of Chesapeake Bay, where an impact occurred around 35.5 million years ago.
 |-
-|rowspan="4"|(Venn diagram intersection)||{{w|Manicouagan Reservoir|Lake Manicouagan}}||A large ring-shaped lake in Quebec, formed about 214 million years ago.
+|rowspan="4"|Both (Venn diagram intersection)||{{w|Manicouagan Reservoir|Lake Manicouagan}}||A large ring-shaped lake in Quebec, formed about 214 million years ago.
 |-
 |{{w|Lonar Lake}}||A circular lake in the Deccan Traps basalt of India, formed approximately 570,000 years ago.