Yes, Snape kills Dumbledore in the sixth book of the Harry Potter series, "Harry Potter and the Half-Blood Prince." Snape kills Dumbledore on the Astronomy Tower at Hogwarts under Dumbledore's orders, as part of a plan to protect Draco Malfoy and maintain his cover as a double agent for the Order of the Phoenix. This shocking event plays a significant role in the overall plot of the series. **

Yes, Severus Snape did survive in the Harry Potter series. He was killed by Nagini, Voldemort's snake, but before he died, he passed on his memories to Harry Potter, which revealed his true allegiance and the sacrifices he made for the greater good. Snape's love for Lily Potter and his role as a double agent for Dumbledore ultimately contributed to the downfall of Voldemort and the ultimate victory of good over evil. **

Severus Snape is a popular character because of his complexity and depth. He is portrayed as a morally ambiguous character with a mysterious past, which adds layers to his personality. Additionally, his love for Lily Potter and his sacrifices for the greater good make him a compelling and sympathetic character. Snape's intelligence, wit, and bravery also contribute to his popularity among fans of the Harry Potter series. **

As an AI, I do not have personal feelings or opinions. However, Severus Snape is a complex and intriguing character in the Harry Potter series. Some fans appreciate his depth and redemption arc, while others find his actions and treatment of certain characters to be unforgivable. Ultimately, opinions on Snape vary among fans of the series. **

Severus Snape is a complex character who experiences a range of emotions throughout the Harry Potter series. He is often portrayed as bitter, resentful, and haunted by his past, particularly his unrequited love for Lily Potter. Despite his harsh exterior, Snape also shows moments of remorse, loyalty, and love, especially in his protection of Harry Potter. Overall, Snape's feelings are a mix of pain, regret, and a deep sense of duty. **

Snape had a complicated relationship with Harry's parents. He had been friends with Lily Potter, Harry's mother, when they were young, and he cared deeply for her. However, he had a strong dislike for Harry's father, James Potter, due to their past conflicts and James's treatment of Snape. This mixed feelings towards Harry's parents influenced Snape's behavior towards Harry throughout the series. Ultimately, Snape's love for Lily led him to protect Harry, despite his feelings towards James. **

In the Harry Potter series, it is not explicitly stated whether Snape becomes a ghost after his death. Becoming a ghost in the wizarding world is a choice made by the individual, and it is unclear if Snape would have chosen to become a ghost. Additionally, Snape's character arc and resolution in the series do not suggest that he would become a ghost. Therefore, it is unlikely that Snape becomes a ghost in the Harry Potter universe. **

Severus Snape is a complex character who is portrayed as both good and evil throughout the Harry Potter series. While he initially appears to be an antagonist, his true loyalty and intentions are revealed later in the series. Snape ultimately proves to be a character who is driven by love and sacrifice, making him more of a morally grey character rather than strictly good or evil. **