Is there a natural reference for the correct time, down to the milliseconds? | AskScience Blog

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Tuesday, July 21, 2020

Is there a natural reference for the correct time, down to the milliseconds?

Is there a natural reference for the correct time, down to the milliseconds?


Is there a natural reference for the correct time, down to the milliseconds?

Posted: 20 Jul 2020 10:49 PM PDT

If all our time-keeping devices shut down, how do we reset them again to the correct time? What defines the correct time in absolute term?

submitted by /u/hairycoo
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Why does the cosmic microwave background permeate space instead of just the edges?

Posted: 21 Jul 2020 05:04 AM PDT

When we see light from the CMB, where is it coming from? What actually are we seeing?

submitted by /u/Syko-p
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Do toothed wales digest bones, if they eat seals?

Posted: 21 Jul 2020 02:50 AM PDT

Do toothed wales digest the bones of the seals they eat? How do they get rid of the bones? Do they have just much stronger acids in their stomach?

submitted by /u/zombycatoutofpocket
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What is the exact mechanism of glacier melting process? Is it caused by sublimation or something related to thermohaline circulation? Or is it something else entirely?

Posted: 21 Jul 2020 03:39 AM PDT

The ice cap in polar region is well below freezing point yet they gradually melts. How so?

submitted by /u/DigitalSilhouette
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Why do all the planets orbit along the same plane?

Posted: 20 Jul 2020 11:42 PM PDT

Every model I've seen of planets has them orbiting the sun along the same plane like a Frisbee. Same thing for the milky way, is everything along the same plane?

submitted by /u/Nartana
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Why is COVID non-response (asymptomatic) considered a problem for elders?

Posted: 21 Jul 2020 08:16 AM PDT

I was reading this article in National Geographic, when I came across this quote that I am finding confusing, "...a range of immune responses to COVID-19, independent of age, including one that was essentially a non-response. That lack of response among some older people in the study 'could be linked to immunosenescence,' speculates Michael Betts, an immunologist at the University of Pennsylvania's Perelman School of Medicine..." I understand that means that a vaccine will not be as effective in elders, but wouldn't non-responders be fine, and not necessarily need a vaccine anyway? Because they may be infected but have no symptoms - they'd need to be quarantined until the infection period passes, of course, so as not to spread to others; but otherwise, wouldn't they survive and be just fine? Sorry if this is basic - not a biology major, not a doctor :-)

*edited: changed "the" to "a" twice

submitted by /u/bluegreyfixation
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What kind of diet would we need to not have to practice dental hygiene such as brushing teeth or flossing? Are we biologically "intended" to eat this diet?

Posted: 20 Jul 2020 12:52 PM PDT

Hi guys, so there is a comet Neowise flying past the earth right now. My question is how can a comet be visible for 2 weeks ?! Won't it just be visible for a day or two and just fly away. How can a comet be "flying by" for two weeks ?!

Posted: 21 Jul 2020 01:34 AM PDT

Also it's supposed to come back every thousand years or some long number so do comets have their own orbits ?!! .

submitted by /u/artemis268
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How do you get one virus to display parts of another virus?

Posted: 20 Jul 2020 07:41 PM PDT

I read that the Oxford vaccine for SARS-COV-2 used an adenoviral vector expressing the spike protein of SARS-COV-2. How do scientists get one virus to express the spike protein of another?

submitted by /u/WeirdWyr
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Will a COVID-19 vaccine have any effect (positive or negative) on cytokine storms that may be occurring in some victims?

Posted: 20 Jul 2020 06:00 PM PDT

To further expand on the question, it's my understanding that some COVID-19 patients may experience a cytokine storm, where the immune response gets out of hand. Since a vaccine elicits an immune response, would there be a risk of it also causing a cytokine storm, either from the vaccine itself or if the person is subsequently exposed to the virus? Or is there something in the vaccines that would prevent this from happening?

submitted by /u/BtdTom
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Does getting several different vaccines for the same disease generate different results than getting just one shot?

Posted: 20 Jul 2020 12:57 PM PDT

Why are so many flowers yellow?

Posted: 20 Jul 2020 12:38 PM PDT

So many wild flowers that I see growing are yellow! I was wondering if there was a reason such as that color collects more light or somethin???

submitted by /u/aewhitaker
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Does typing and writing on a keyboard engage the same areas of the brain as speaking and using sign language?

Posted: 20 Jul 2020 06:40 AM PDT

IS the process of learning to type analogous to learning a sign language that consists only of the paths our fingers take for keystrokes?

submitted by /u/ramblingnonsense
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Why do people have to re-learn speaking,walking or some basic everyday muscle memory functions after having a brain stroke? Why isnt the ability altered ? like wanting to move your left hand but you are moving your right?

Posted: 20 Jul 2020 09:32 AM PDT

If electric cars are possible, is electric space travel also possible?

Posted: 20 Jul 2020 05:30 AM PDT

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