Wonderful Video. I have to congratulate to you as you have made this video as simple to understand these two difficult topics ( for me ). I've just started a few months ago to learn astronomy on my own and at the moment I have so much confusion in my mind and this tutorial helped me a lot. But I have a question for you: the right ascension coordinates of a planet or a star change during the day?
I'm glad you're exploring astronomy for yourself and found this video helpful! I completely understand that right ascension and declination could be a difficult topic to understand immediately. To answer your question, the right ascension of objects in the sky depends on whether they're permanent features (like stars) or if they move across the background stars like planets, comets, etc. Stars will usually have the same RA value but planets that move across the stars will have different RA/dec values on different days since they're moving across the sky.
