Message from @jeremy
Discord ID: 633499894702931978
Is a sextant ?
@jeremy nah a theodolite is better
Hmmm
For the Hubble Law (and the hubble constant) to be valid, gravitational redshift needs to be decoupled from doppler (redshift due to motion)
@SunRazor I see. I don't knowuch about that
Ok
So u got ur sextant or theodolite u do this with the moon and the sun
@jeremy simple geometry
U come up with some valid numbers ?
@jeremy for the sun it doesn't work bc the angles change is too small
If you could quantify how much of the redshift is due to motion (expansion of the universe) and how much redshift is due to a difference in gravitational potential, on one end of a spectrum the galaxies far away could be still and just at a lower gravitational potential than we are today, and on the other end the galaxies are at equal gravitational potential as we are today and are moving away from us. The hubble law assumes that the redshift is due entirely to the doppler effect caused by the expansion of the universe.
For the moon yes it works. We can measure it's parallax from diff places on the earth
Or it could be because we never see the actual sun we see the apparent position of the sun no ?
Dunno what that would do, no matter what we see the apparent position of every object
So ok u got ur pointer u check ur angles to the moon what number u get
That's just a give
Moons distance
Are they using math with s sphere or flat earth when they do that
The measured distance between the locations
That's what's used
Wait a sec
The sun and moon are same apparent size
I used to watch Bill Nye every day as a teenager. Looking at him now though, sometimes I wish I never wasted my time.
We need to back this up a little rogue please
Sun and moon are same apparent size
Are they?
Because we have total solar eclipse and partial solar eclipses
@jeremy Some people would argue that the sun and moon being the same size is proof that God intelligently made the heavens and the earth. Some people would argue that it's evidence that an exceedingly more superior alien race artificially placed the earth and the moon into their orbit positions.
Seems the moon changes size a bit
Turns out it changes by 14%
Are u saying the sun and moon aren’t the same apparent size
Close to the same size
It not exactly
Within about 7%
I think that's because the moons orbit is elliptical right?
Yep
sometimes it's farther and sometimes it's closer
And inclined
So we agree the sun and moon have the same apparent size
not by a lot