The series does not continue that far into the future.
Yes, along with Ron and Hermiones children, and Draco Malfoy's children.
I would say Harry's favorite place is Hogwarts because it was his first real home.
constellations
If you mean Hogwarts, no one know, except for the fact that it's in Europe.
Hogwarts's (Hogwarts is Harry Potter's school) motto is "Draco Dormiens Nunquam Titillandus" which means "Never tickle a sleeping dragon".
Severus Snape He had known Lily before they both went to Hogwarts
Ginny Weasley.
The death of his parents, his entrance at Hogwarts and his ultimate victory over Lord Voldemort
Nowadays term 'alma mater' doesn't refer to a person, but a school, so it would be Hogwarts.
The "school for magic" in Harry Potter is Hogwarts School of Witchcraft and Wizardry. There are four houses and each one bears the name of the four founders of Hogwarts, respectively: Gryffindor, Hufflepuff, Ravenclaw, and Slytherin.
No, he has three children with his wife Ginny.
It is unknown who will play James, Albus and Lily.