Evidently Venus. I do think you need more than x7 magnification to discern what is now approaching near crescent. Even at maximum, Venus only transcends just over 1 arc minute viewed from Earth.
https://en.wikipedia.org/wiki/Venus
Interestingly the whole pattern repeats itself approximately 5 times every 8 years, a near orbital resonance for the observant mathematicians.
Zero minus one for collecting my new Physics Book.
I can hardly wait!
I shall soon understand this Gravity business as well as Leonard Susskind:
https://cerncourier.com/a/lost-in-the-landscape/
Very interesting musings there on why a Quantum Theory of Gravity is so hard to fugure out.
See, we are stuck inside the Universe, so it's hard to do an external experiment on the system, as we observers usually do in Quantum Mechanics.
Uh, thanks. Per post #622 have been advised to ignore crecent venus and am now looking at some bright yellow object about 2 handwidths (16 deg ?) north of east at 5AM EDT (1000 GMT?) about 20 deg above horizon. Per wikipedia "May-July Orion is in the daytime sky in northern Hemisphere and thus invisible". It is not quite daylight at 5 AM. Don't know how Galu in Scotland was planning to observe Betelgeuse. It is so light polluted here in town I can't see but 2 stars of the big Dipper at 5AM. But a supernova should be visible, even in daylight.
As my arms are 30" long, 2*pi*r=188"=360 degrees so a handwidth or 4" at arms length should be roughly 8 deg.
Per string theory, I read wikipedia this winter and can't detect any predictions that string theory makes that would be testable at this time. So I'm treating string theory as philosophy until further developments.
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I can only guess really, but you may be looking at Jupiter in the early dawn:
https://solarsystem.nasa.gov/planets/jupiter/overview/
https://earthsky.org/astronomy-essentials/visible-planets-tonight-mars-jupiter-venus-saturn-mercury/
People at this forum are usually notoriously unwilling to get up early in the morning, being largely "Night Owls". 😀
https://solarsystem.nasa.gov/planets/jupiter/overview/
https://earthsky.org/astronomy-essentials/visible-planets-tonight-mars-jupiter-venus-saturn-mercury/
People at this forum are usually notoriously unwilling to get up early in the morning, being largely "Night Owls". 😀
My mind simply rejects the notion of a universe as all there is. What about omniverse and multiverse? What about formless realm(s) beyond limited ability of human mind to know?
Let's see if "redshift" can logically suffice for an "expansion" of "spacetime":
Redshift is observable. Doppler effect we leave as the only explanation:
Space-time is interwoven with matter - Precondition for the explanation spacetime expansion (Let us disregard a conceivable circular argument).
Matter expands with space-time in all directions (3 dimensions) and clock, exacter: "beater" ("time"). Since in every galaxy and on every quasar a ruler lies around, because of me also a clock, "beater" ("time"), we look on it: Every day we see on the scale of the ruler some millimeters added and on the scale of the clock some seconds added;-) Everywhere - let's assume the observer as omnipresent;-)
Or is it something like this: Observably no further millimeters and seconds are always added. Space-time expands (should be so), but does not become "bigger" (observable: the scales remain identical.). There is not added more "space-time", not more "space" and not more "time". Also no more quanta are always added. And also matter has become observable not more and also not less. Now finally we have found and proved the infinitely expanding space-time;-)
Now we only have to see if redshift...-)
Something like this;-?
Redshift is observable. Doppler effect we leave as the only explanation:
Space-time is interwoven with matter - Precondition for the explanation spacetime expansion (Let us disregard a conceivable circular argument).
Matter expands with space-time in all directions (3 dimensions) and clock, exacter: "beater" ("time"). Since in every galaxy and on every quasar a ruler lies around, because of me also a clock, "beater" ("time"), we look on it: Every day we see on the scale of the ruler some millimeters added and on the scale of the clock some seconds added;-) Everywhere - let's assume the observer as omnipresent;-)
Or is it something like this: Observably no further millimeters and seconds are always added. Space-time expands (should be so), but does not become "bigger" (observable: the scales remain identical.). There is not added more "space-time", not more "space" and not more "time". Also no more quanta are always added. And also matter has become observable not more and also not less. Now finally we have found and proved the infinitely expanding space-time;-)
Now we only have to see if redshift...-)
Something like this;-?
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To be clear, it is the coordinate system that expands.
@tonyEE once described it along these lines: Galaxy clusters stay the same number of light years apart, but in spacetime those light years get "bigger".
Remember, we are talking about the geometrical properties of a four-dimensional spacetime within which the spatial dimensions can expand or contract.
The idea that objects can have constant spatial coordinates while the distances between them increase with time certainly makes my mind boggle! 😵
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The expansion of space does not affect the size of a ruler which is a material object held together by strong forces.
This is important since we can detect expansion only if our measuring instruments have fixed sizes. If everything were free to expand then our rulers would expand proportionately and we would not notice the difference.
I think it does effect but not much. Space is not acuall mathematical space. Its not endless. Space is a quantity. It can be mesured and quantified
The three dimensional "distance" stays constant... The 4D ( or greater ) "distance" does change..
In more than 3D space, the "yardstick" used to measure the distance changes. Imagine if you had your car set for mph... and you were doing 60. Now, change the settings for kph.. and that number changes to 100. So, you've gone from 60 to 100. Now, if those miles and kilometers were measured in 9D space-time...
Not convinced? OK, take a yardstick. Say it's 1/4" thick, 1" wide and 36" long. Now, change it so it's 1/4 by 1 by 24. Still call it "yardstick". It's width and depth have not changed, only it's length.
So, say in our 3D space, we can only see the width and depth and those are constant. Yet the length, has changed. So, in 4D+ space, the yardstick changed, but not the objects being measured.
No, i am pretty sure he means what he said.
Internet is the “entire network that comprises the internet”
internet is what you plug your wifi/computer into and use locally.
dave
You've always shown a good grasp of the difference between space and spacetime, which can often elude others, including me! 😎
Spacetime may not be real in the sense that an atom is real, but it does enable us to make predictions that are in line with what we observe and measure.
In that sense, spacetime may be considered as a mathematical tool.
All it needs is a BIG THINK:
https://bigthink.com/starts-with-a-...e,everyone; today we know this cannot be true.
The coordinate system is already ahead, before the objects come;-) Clever;-))
How nice that matter is considerate of our fluffies;-)
Aside: When we bend a sheet of paper symbolically for 2D, we are not bending 2D with it. Not symbolically, certainly not model-like. It is the same with 3D or anything else;-) That are gimmicks too;-)
With you AI soon will not come to sleep from laughter;-) Unfortunately, AI will have to sort people according to "useful" and "useless")-; What will happen to the "useless people" is public)-; And there are not so many flowers to water, not so many stones to cut, that all people will be needed)-;
There is still time to use the heads not only for scratching;-)
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