What is the strongest evidence for the existence of the Oort Cloud? | AskScience Blog

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Wednesday, September 4, 2019

What is the strongest evidence for the existence of the Oort Cloud?

What is the strongest evidence for the existence of the Oort Cloud?


What is the strongest evidence for the existence of the Oort Cloud?

Posted: 03 Sep 2019 06:29 PM PDT

I have been looking into this and keep hearing scientist saying they believe that the Oort cloud does exist. That word keeps standing out to me and can't see its place in the situation. I am interested in the evidence for the cloud. Not an explanation of what such a cloud would be or someones personal feelings about it.

submitted by /u/Scutch434
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Is there a notable psychological impact that deaths of multiple owners/paitents has on service animals?

Posted: 03 Sep 2019 05:43 PM PDT

This question is predicated on the idea that some service animals will move on to a new person if their previous owner/patient dies. I apologize if this is not the case.

I understand that some animals mourn the deaths of their kin, and I'm wondering if this interactiom is seen in servics animals and their owners/patients, especially over multiple owners/patients.

submitted by /u/Kherda0
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How soon could leukemia be detected?

Posted: 03 Sep 2019 05:43 PM PDT

Say someone donates blood almost every month for years. If leukemia is a cancer of the blood, how could that not have been found prior to being in it's late stage?

submitted by /u/brndnlwtsn
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How do blood vessels get nourished?

Posted: 03 Sep 2019 07:08 PM PDT

Other parts of body gets nourished because blood is supplied to it through blood vessels. What supplies blood to blood vessels (their different layers) ?

submitted by /u/sambhuTambhu
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How is chlorine removed from the stratosphere?

Posted: 04 Sep 2019 12:41 AM PDT

What mechanism removes chlorine from the Antarctic stratosphere? We know the ozone hole is recovering, so there is less chlorine activated from reservoirs in the polar springtime. How is the chlorine 'leaving' the stratosphere?

submitted by /u/occams_eggwhisk
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So since color is determined by the spectral lines of atoms this would mean to find the color of a chemical you would just combine the spectral lines. Is this correct?

Posted: 03 Sep 2019 04:38 PM PDT

I still don't understand how this combination would work though. Would it be like color theory where you mix colors to form new colors? Also the problem with spectral lines is they are made up of multiple colors where chemicals are just one color when you look at them

submitted by /u/2334851
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What causes clouds to be grey or white?

Posted: 03 Sep 2019 01:35 PM PDT

I've always wondered, how come some clouds are dark grey, while others are bright white?

Dark grey clouds are usually associated with rain? What makes rain clouds different from "normal" clouds?

submitted by /u/prometheus345
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What Initiates earthquakes in a plate tectonic regime?

Posted: 03 Sep 2019 05:12 PM PDT

I had recently learned that wastewater injection can cause mini faults to slip due to the changes in pressure etc. and the slipping can cause earthquakes (weak on the richter scale)

it got me wondering. when rocks are becoming metamorphosed they change in size and volume could this process be a primary reason as to why earthquakes occur? the strongest earthquakes are at convergent boundaries of large plates so i legit am interested to see the literature on this.

is this a reasonable idea, where are the holes if not what am i miss understanding if not?

thanks for those who interact, in advance.

submitted by /u/robespierrem
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do the scientists at the LHC have like, a black hole protocol ?

Posted: 03 Sep 2019 09:59 PM PDT

so, from what i've been learning lately from youtube videos, one of the initial concerns of the Large Hadron Collider was that it could potentially create a black hole; of course not a massive one, but any black hole, even the size of a penny, can wipe out earth completely. is this something that the people at the LHC have to think about all the time ? or is it so unlikely they don't think of it at all ?

submitted by /u/jn3jx
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What is the difference between citric acid and ascorbic acid (Vitamin C)?

Posted: 03 Sep 2019 11:59 PM PDT

I understand that these are different compouds and have different metabolic properties and pathways. But I was unable to find them compared to each other as often enough they are confused.

submitted by /u/Tom4s
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Is possible toscan the electrical impulses from the neurons of the human brain and then transform them into a binary code?

Posted: 03 Sep 2019 03:50 PM PDT

Theoretically, it is possible to scan the electrical impulses from the neurons of the human brain and then transform them into a binary code (eg 1 when an impulse appears, 0 inactive zone) , is considering scanning responsible areas of thinking ?

Can this information be used in AI development?

submitted by /u/Enviro3ed
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Where did the carbon come from, before it went into the ground?

Posted: 03 Sep 2019 08:39 AM PDT

My understanding is that oil deposits are formed from layers of plankton and other plant/animal matter getting buried underground over millenia. Before it settled down as sediment, where did this living matter take its carbon from?

I'm assuming there must have been enough atmospheric carbon to support photosynthesis for algae to thrive and ultimately to form these underground deposits ~100 million years ago.

We are currently concerned about releasing these ancient carbon stores back into the atmosphere. I'm curious how the situation for life on earth was different with that carbon being in the air back then?

It doesn't sound like a major problem if this were a closed system, with no additional carbon being added. Is it just a question of volcanism continuously adding to the net amount of CO2 available over time?

submitted by /u/slushpilot
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Given the trillions of stars, can any star go supernova spontaneously for no reason?

Posted: 03 Sep 2019 05:20 PM PDT

How does gravity work on the edge of the atmosphere?

Posted: 03 Sep 2019 01:30 PM PDT

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