Galactic Sphere, Declination, Right Ascension

[@SovetskieSoldat]

Thank you! This was a much better explanation than the professor's.

[@Thereischeeseindeed]

This is so helpful for my astronomy final! Thank you for not just defining the terms but actually explaining things.

[@mollie3902]

It’s nearly been a year and I’m glad you made these videos because it nice to have you teaching even when you’re gone - an svc pupil

[@user-bx7nw1ve6y]

I'm aware this is only meant to express an elementary concept, but as long as you went to the trouble to make a whole video about it, why not take a few more seconds to include how Earth's axial wobble affects things, why it has to be vernal equinox when autumnal equinox is the same thing, and what units of measurement are used for RA (hours, minutes and seconds). You should really also consider using a script next time.

[@amandamoore2868]

Thank you! I am taking Observational Astronomy this semester, and I had forgotten some introductory material, this helped me get back on track.

[@OswaldGaming95]

thank you so much, this helped a lot, every other video on youtube is useless. thank you.

[@pundevkumar7248]

I could find the satisfactory content here and am very glad watching the content ❤

[@walterhynson2898]

Thanks a video that makes sense, given by a person who know how to teach.

[@lexlex5555]

Thank you so much! I'm currently reading a book on this subject and this clarified things

[@pegasus6724]

Thanks for video

[@donthavelove42]

i have a phobia from space imagery, It sounds fun but yea, i needed something like that for my study project, thanks

[@karthiklogan9384]

Thank you so much sir. Thanks for the diagram. Worth a lot

[@garywhitton1617]

Glad its of use

[@lizbotica2965]

Thank you for explaining these things easily.

[@davecooper5951]

Couple of small points "Ascention" is spelt Ascension. "How far around" (horizontal angle) - may be better to use 'hour angle' like we do in Celestial Navigation. Beginners tend to get confused with the Vernal /plane of the Ecliptic etc. Otherwise good explanation

[@user-bx7nw1ve6y]

One more small point: "spelt" is spelled "spelled".

[@user-tg3pr2os2s]

Thank you for making this video I am studying declination

[@charlotte22]

Thank you for the understandable explanation.

[@x13years]

Thank you. Drawing it out helps

[@ayumumaeda508]

thank you so much, this video is so helpful.

[@charlotte22]

Which video are you referring to that describes the Vernal Equinox?

[@Hannahbananalovesrice]

Thanks! I do have a question on why does the declination change throughout a year?

[@GiffysChannel]

Thank you, I now know that the next video I want is of the vernal equinox. You should link other videos under this one ✌😉

[@prateekgupta2408]

Please tell be name of this awesome pen

[@leave3879]

doing my astronomy gcse and this is really helpful!

[@brookzera218]

You are really good at drawingin perspective .u may be a natural painter .give it a try.... that right ascension drawing went through the celestial sphere as it should ! And subscriber from Ethiopia right above the equator

[@kassidy8008]

Loved the visuals!

[@TaiganTundra]

So how does this work when you take into consideration that the Earth wobbles on it's axis?

[@sharroon7574]

Star maps are dated for this. The coordinates would change.

[@pegasus6724]

How far out does the sphere around the earth go is it unlimited

[@gabedarrett1301]

2:10 Is this point you drew on the Earth's surface or at the Earth's center?
Also, how does this change as the earth orbits the sun?

[@yuridanylko]

How do you account for the fact that you are never really looking at the sky from the equator?

[@leokeatonn]

Came here cuz i was very confused when watching contact

[@ashtalk2827]

Great and very easy explanation

[@bobcausey]

Gary, I am enjoying your astronomy videos. Do you have a book or several books that you would recommend on the subject that explain them the way that you do?

[@garywhitton1617]

Hi Bob. Thanks for your comments. I do not really have any books to recommend. Its just how I try and translate the ideas to pupils.

[@dazstudio68]

What is the ball in the middle?
The Earth we are navigating?
How do you get a 90°angle at the GP from a ball Earth?
Earth is measured flat

[@The_Hallowed]

legend

[@Sawta]

The video is really great, but if I have a specific star in mind, how do I determine what the declination and right ascension of that point is? I ask because I have an application that asks for the declination, and I am unsure of what to put.

[@user-bx7nw1ve6y]

You have to first know your exact latitude and longitude, then take this into account when you measure the RA and declination of the star you are interested in from your location.

[@Sawta]

@@user-bx7nw1ve6y Got it, thanks for the response! :)

[@perihangummadova5017]

thank you sir you helped us a lot.

[@SABKANAVNEET]

#sabkanavneet
#sailornavneet

[@Danieltredway1431]

Thanks you so much!!

[@cantsolvesudokus]

Hmm so that’s how it works. Thanks :)

[@prakashshrestha1249]

Thanks a lot sir,
Can the Right Ascension (RA) and Declination (Dec) can be used for the astrology directly??

[@user-bx7nw1ve6y]

Astronomy has nothing to do with astrology.

[@dindaayu2132]

so helpful, thank you sir!

[@marinogaming6124]

It’s right ascension.

[@hesousa8488]

There’s no explanation about RA

[@pabloantonioaguilar5371]

Tiddy at 0:56

[@sunny9161able]

💞💞a💞💞

[@Name-jw4sj]

Waste of paper. You should invest in a white board.

[@Dasein2005]

Another non-explanation of RA. Don't include it in the damn description if you're going to simply refer to other videos.

[@emileewatson4845]

right ascension? he explained it at the end of the video.

[@user-bx7nw1ve6y]

@@emileewatson4845 I think Michael Simpson was referring to vernal equinox.