Tuesday, November 3, 2020

How do we know what the Milky Way looks like if we are within it?

How do we know what the Milky Way looks like if we are within it?
I've seen news lately about a new strain of COVID-19, can anyone explain what changed and how it evolved?
Is it true that COVID can make you lose memories?
Were people who test negative for antibodies never sick at all with COVID-19?
Which Covid-19 vaccine candidates provided positive data in animal trials? If a vaccine works better in animals, is it more likely to be more effective in humans?
What causes the undersea river valleys and rivers that run off the continental shelf?
Where does the electricity stay when you turn on the plug but there is no socket in?
What is the difference between coronavirus and Covid 19?
How do animals eat venomous snakes and spiders without being poisoned?

Posted: 02 Nov 2020 03:53 PM PST

From sources I had read and just general knowledge growing up, the Milky Way galaxy has always been described to be as a 2 (sometimes 4) arm spiral galaxy. What I have always wondered is how we can tell that from looking/being within it.

submitted by /u/Boom2215
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I've seen news lately about a new strain of COVID-19, can anyone explain what changed and how it evolved?

Posted: 02 Nov 2020 10:06 AM PST

submitted by /u/cR_Spitfire
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Is it true that COVID can make you lose memories?

Posted: 02 Nov 2020 07:28 AM PST

I've heard someone talk about it in the school, a girl might not be able to take the final exam at the end of the year, because she had corona. She lost significant amount of her memory, and doctors don't know if she will recover. Is it true?

submitted by /u/Yallaintnosun
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Were people who test negative for antibodies never sick at all with COVID-19?

Posted: 03 Nov 2020 04:18 AM PST

submitted by /u/eevem5
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Which Covid-19 vaccine candidates provided positive data in animal trials? If a vaccine works better in animals, is it more likely to be more effective in humans?

Posted: 02 Nov 2020 12:55 PM PST

With many major vaccine candidates in phase 3 trials for safety and efficacy, I looked up results of Oxford/AstraZeneca animal trials, and found out that it couldn't prevent infections in monkeys, however there was no pneumonia in those monkeys compared to unvaccinated monkeys.

Some more questions:

Are all vaccines attempting to prevent symptomatic infection, or are there some attempting to outright prevent infection? If a vaccine prevents symptomatic infection but is unable to prevent infection, does it not mean that it won't be able to break the chain of infection through asymptomatic transmission?
Are there vaccine candidates that were effective in animals in preventing infection (and not just symptomatic transmission)?
Which vaccine candidates appear to be the most promising based on animal trials and up to phase 2 trial results?

I know these are a lot of questions. Just curious.

submitted by /u/tmleafsfan
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What causes the undersea river valleys and rivers that run off the continental shelf?

Posted: 02 Nov 2020 11:26 AM PST

I was browsing around on google earth and noticed that some parts of the continental shelf has clearly defined, what looks like, river valleys. Some areas have clearly defined rivers - if you look just south west of Ireland. Are these ancient flows for when this was above water or is this due some undersea process?

submitted by /u/a_is_for_a
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Where does the electricity stay when you turn on the plug but there is no socket in?

Posted: 02 Nov 2020 01:32 PM PST

submitted by /u/SnooPineapples7470
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What is the difference between coronavirus and Covid 19?

Posted: 02 Nov 2020 12:44 PM PST

Sorry if its a dumb question I'm just curious

submitted by /u/alwaysremeberURloved
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How do animals eat venomous snakes and spiders without being poisoned?

Posted: 02 Nov 2020 11:44 AM PST

submitted by /u/spacebro_123
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