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Largest asteroid ever to hit Earth was twice as big as the rock that killed off the dinosaurs
LiveScience ^ | 10/5/2022 | Harry Baker

Posted on 10/11/2022 1:27:42 AM PDT by LibWhacker

The destructive space rock was somewhere between 12.4 and 15.5 miles wide.

The largest asteroid ever to hit Earth, which slammed into the planet around 2 billion years ago, may have been even more massive than scientists previously thought. Based on the size of the Vredefort crater, the enormous impact scar left by the gargantuan space rock in what is now South Africa, researchers recently estimated that the epic impactor could have been around twice as wide as the asteroid that wiped out the nonavian dinosaurs.

The Vredefort crater, which is located around 75 miles (120 kilometers) southwest of Johannesburg, currently measures about 99 miles (159 km) in diameter, making it the biggest visible crater on Earth. However, it is smaller than the Chicxulub crater buried under Mexico's Yucatán Peninsula, which measures around 112 miles (180 km) in diameter and was left by the dinosaur-killing asteroid that struck Earth at the end of the Cretaceous period about 66 million years ago.

But impact craters slowly erode over time, which makes them shrink. The most recent estimates suggest that the Vredefort crater was originally 155 to 174 miles (250 to 280 km) across when it was formed 2 billion years ago. As a result, the Vredefort crater is considered the largest impact crater on Earth despite being smaller than the Chicxulub crater today.

In the past, scientists thought the Vredefort crater was originally much smaller — around 107 miles (172 km) wide. Based on that estimate, researchers previously calculated that the asteroid responsible for the impact would have measured around 9.3 miles (15 km) across and collided at a speed of around 33,500 mph (53,900 km/h). But in a new study, scientists have revisited the crater's measurements and gained new insight into the size of the enormous space rock.

(Excerpt) Read more at livescience.com ...


TOPICS: Astronomy; Science
KEYWORDS: asteroid; asteroids; astrobleme; astroid; astronomy; bolide; bolides; catastrophism; comet; comets; earth; extinction; fauxiantroll; fauxiantrolls; hit; impact; impacts; largest; noahsmalarkey; orosirianperiod; paleontology; paleoproterozoic; science; southafrica; sudburybasin; vredefortcrater; youngearthdelusion; youngearthdelusions
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To: wannabegeek

Since an electron microscope doesn’t use light “colors” have no direct meaning as a “property” or physical feature of the material. It used to be grey scale was how the image was represented. Colors can be assigned to represent intensity, or some other physical property or just make it more presentable.


41 posted on 10/11/2022 1:35:16 PM PDT by Reily
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To: logi_cal869

This is a good one!

https://en.wikipedia.org/wiki/Tunguska_event


42 posted on 10/11/2022 1:39:42 PM PDT by Reily
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To: LibWhacker
Blnk
43 posted on 10/11/2022 1:53:41 PM PDT by minnesota_bound (Need more money to buy everything now)
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To: Reily
If EM not colored, how in the hell they got this supposedly picture of SARS-CoV-2 virus?  Ah, picture enhanced to make it more presentable?  Then is that image reliable to prove existence of virus? 


44 posted on 10/11/2022 4:15:57 PM PDT by wannabegeek
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To: BroJoeK
So, evidently you know supposedly picture of SARS-CoV-2 enhanced from black and white to make it more appealing?  Is that a valid argument there's so-called SARS-CoV-2 virus then?  AFAIK it was never been proven to exist to even satisfy the Koch' Postulate after all this time?


45 posted on 10/11/2022 4:22:14 PM PDT by wannabegeek
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To: minnesota_bound
Ha-ha-ha-hah! That means maybe some dinosaur bones at the bottom the Black Sea alongside with the Russian missile cruise flagship Moskva?
46 posted on 10/11/2022 4:28:10 PM PDT by wannabegeek
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To: wannabegeek

The EM picture image exists so do images using other non-optical techniques such as ATM - atomic force microscopy, MFM - magnetic force microscopy, UVM - ultraviolet microscopy, IRM - infrared microscopy, PAM - photoacoustic microscopy, even high frequency radar or sonar images. All usually collected in gray scale. There’s usually a handy-dandy option on the instruments to colorize it for analytical purposes. Some people prefer to do their image analysis in gray scale. They say its better (usually old farts like me!) others prefer colorized. It used to be you couldn’t get the dynamic pixel range in color as you could in grey scale. I don’t think that’s true now. There’s colorization services you can have done on old pictures! You going to tell me those people don’t exist?


47 posted on 10/11/2022 4:45:35 PM PDT by Reily
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To: minnesota_bound
Another theory?

That's a good caricature! May be dinosaurs none save in the flood of Noah???

48 posted on 10/11/2022 5:06:49 PM PDT by Jimbo1620
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To: Reily
You're just making up with all the bullcrap ATM, MFM, IRM, PAM, what else?  All irrelevant.  

Still nobody on earth ever really isolated the SARS-CoV-2 supposedly virus that would cause so-called Covid-19 infection.  Some fake scientists they call themselves virologists claim they isolated SARS-CoV-2 from body fluids of supposedly people with Covid-19 infection by mixing the specimens with genetic materials like monkey kidney cells or vero cells, liver cancer cells, fetal bovine serum, filtered it, ah they call that isolation.

In the Miriam-Webster dictionary, isolate means:-

: to set apart from others

: to select from among others

: especially to separate from another substance so as to obtain pure or in a free state.

Pure and free state!  Mixing samples with vero cells, liver cancer cells , fetal bovine serum then filter it, that's not pure state.  You can do all your BS stuff ie ATM, MFM, IRM, PAM, that can't prove the SARS-CoV-2 was isolated as pure and free state.

So where did they get that supposedly SARS-CoV-2 picture?  It's computer graphics.

How about this?  99% of deaths in 1918-20 so-called Spanish flu pandemic were injected with experimental bacterial meningitis.  There was epidemiological studies in 1918-19 called Rosenau Expriment [click] they experimented to sicken healthy volunteers by injesting, spraying and even injecting body fluids from supposedly sickened by the flu, to which nobody got sicked because the so-called pandemic wasn't caused by virus but fake vaccines like today's Covid-19.


49 posted on 10/12/2022 12:37:27 AM PDT by wannabegeek
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To: wannabegeek; Reily
wannabegeek: "How about this? 99% of deaths in 1918-20 so-called Spanish flu pandemic were injected with experimental bacterial meningitis.
There was epidemiological studies in 1918-19 called Rosenau Expriment [click] they experimented to sicken healthy volunteers by injesting, spraying and even injecting body fluids from supposedly sickened by the flu, to which nobody got sicked because the so-called pandemic wasn't caused by virus but fake vaccines like today's Covid-19."

In 1918-19 my grandmother was a newlywed living in the backwoods of western NC.
When I was a boy, she told me that among her neighbors, women who were pregnant died from Spanish flue, those who were not survived, including herself.

You can be certain that none of those people were getting experimented, in any way, on.

50 posted on 10/12/2022 5:53:09 AM PDT by BroJoeK (future DDG 134 -- we remember)
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To: wannabegeek; Reily
wannabegeek: "So, evidently you know supposedly picture of SARS-CoV-2 enhanced from black and white to make it more appealing?
Is that a valid argument there's so-called SARS-CoV-2 virus then?
AFAIK it was never been proven to exist to even satisfy the Koch' Postulate after all this time?"

I've seen no evidence to suggest those photos aren't exactly what they're said be -- images of the SARS virus.
Reily mentioned a long list of equipment useful in visualizing viruses.
We could well add to that list DNA analysis used to distinguish one similar virus from another -- that's how they know whenever a new mutation appears.

But all you did was handwave them away -- "irrelevant", you say.
Well, of course, if you close your eyes and refuse to see the evidence, then you can "honestly" claim there is none.

But the evidence remains, regardless of whatever fabulous stories you concoct to wish it away.

51 posted on 10/12/2022 6:05:27 AM PDT by BroJoeK (future DDG 134 -- we remember)
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To: wannabegeek

You were claiming electron microscopy doesn’t work because you didn’t think colorized images show anything real. I presented the case that color is irrelevant. All the microscopy techniques I mentioned are real, have real uses from chemistry to materials science\engineering to criminal forensics and yes medicine even virology

Now you’re off on some other tangent.


52 posted on 10/12/2022 7:20:37 AM PDT by Reily
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To: Reily; BroJoeK
First of all the supposedly SARS-CoV-2 virus they say infect people with Covid-19 can't be isolated, can't be purified to satisfy Koch' Postulate, which means this Covid-19 thing all freaking hoax.  Your ATM, MFM, IRM, PAM are all irrelevant, the very colorful computer graphic image of supposedly SARS-CoV-2 virus all bullcrap, that can't prove the existence of virus, nor virus caused deaths in the so-called 1918-20 Spanish flu pandemic, today fake vaccination based on lie maiming and killing a lot of people.
53 posted on 10/12/2022 5:40:31 PM PDT by wannabegeek
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To: wannabegeek

Again, nowhere am I discussing the virus!


54 posted on 10/12/2022 5:49:33 PM PDT by Reily
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To: SteveH

55 posted on 12/01/2022 7:50:11 AM PST by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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