I briskly walk through the seventh-floor corridor hoping to stumble across the room Snape has instructed me to be at for class. I walk past a huge tapestry on my left, but still I cannot find this classroom. I then turn around and walk back. I do this three times before I finally stop and sigh heavily. I am never going to find this room.

"Excellent, Mr. Potter," Snape drawls behind me.

I instantly whirl around with my mouth hanging open. I know that not even two seconds ago there was a wall there. His arms are crossed, and he is mostly relaxed in his posture. I watch his eyes narrow on me as I guess he notices my red face.

"I am glad to see you can follow my directions every now and then. Perhaps you'd like to join me now?"

"But—" I stupidly say. He doesn't allow me to finish. In fact, he grabs my upper arm and pulls me into the large room that I know for a fact wasn't there before. The large oak doors with black intricate designs loudly clang shut behind us.

"Since it is only you that managed to fail Astronomy, I am forced to be stuck here with only you as my company." His eyes show amusement, but his words speak mockery. Then again, when doesn't he mock others, though? "Need I ask about your face, Mr. Potter?"

"I added too much leech juice," I quietly mumble. He only nods before walking away from me.

"I take it there is more to this sordid story of yours, Harry?" His voice is a bit gentler now, but I can still hear the mockery. "Well, don't leave me in suspense. How badly damaged is my classroom?"

"It's not bad," I reply. "At least it wasn't when Professor Vector and I left."

"Wonderful," he drawls before pushing up his sleeves. "I take it by the anger in your voice when you mentioned her that she did something idiotic?" I nod in reply, which makes him sigh heavily. "She broke Rule Number One, didn't she?"

"Yes, sir," I meekly answer, expecting any moment to hear and see him throw the largest temper tantrum. However, Snape doesn't.

"She took you to Madam Pomfrey?"

"Yes," I respond quite curious now of his behavior.

"Well, at least she did one thing right," Snape says before pinching the bridge of his nose. He then shakes his head and stares at me. "You have Herbology after this?" I nod slowly. "Very well, come see me tonight, and we will add the second coat of salve to your face."

"You're not mad?" I ask rather shocked.

"That Septima nearly killed you, of course I am," Snape growls. "However, I am attempting not to show it around you. You have seen too much anger exhibited from me while you've been here. Need I show you anymore now that you are my ward? I would have thought you'd have been grateful not to have to listen to my ranting." He then sighs heavily. "Am I angry that you made another stupid mistake when brewing? No because I've come to expect it from you."

"Gee, thanks," I drawl. "You know, I'm not that bad."

"I have several cauldrons who would dispute that if given the chance, Mr. Potter. Now, you are here to learn Astronomy, not treat this as a place to socialize."

"You started it," I quickly point out.

"If you continue this asinine line of conversation, Mr. Potter, you shall find yourself in the Slytherin dorms tonight."

"You wouldn't!"

"Try me," he says darkly.

"But I'm—"

"As if that matters, Harry," he replies.

"Fine," I respond quietly. "Let's get this over with." He swiftly rewards me with a stinging hex to my backside. I say nothing because I know that will only make it worse.

"We will go in alphabetical order of the constellations' names. Throughout these lessons, you will tell me the English name and its position in the night sky. You will also write a four feet essay on each constellation. There are thirty-four in all. After we finish with constellations, we will move onto types of stars before moving onto planets. Do you have any questions?"

"No, sir," I grumble.

"Very well, the first constellation we will be learning is Andromeda, which is also its English name. Andromeda is a large constellation in the northern hemisphere that contains the Andromeda galaxy, which you can see without the need of a telescope. Andromeda is located south of the constellation Cassiopeia and west of Perseus. In Greek mythology, Andromeda was the daughter of Cassiopeia, and her future husband Perseus saved her from a sea monster. Thus, the reason why Andromeda is located near the constellations Cassiopeia and Perseus. Do you have all that, Mr. Potter?"

"Yeah," I reply as I finish writing Perseus on my parchment.

"Good, now without glancing back at your notes, where is Andromeda located?"

I groan loudly, which makes Snape quickly send another stinging hex at me. I then glance up at Snape before speaking. I don't want to give him any more reasons to hex me. I wait for him to nod before answering him.

"Andromeda is in the northern hemisphere near Cassiopeia and Perseus."

"Specifically where," Snape responds.

"It's below Cassiopeia and to the right of Perseus."

"Left of Perseus, Mr. Potter, if it is west of Perseus, then it is left of it."

"Fine, left of Perseus," I grumble.

"Why do you believe Andromeda is below Cassiopeia?"

"Oh, come on, Snape. Professor Sinistra never made me do this."

"Yes, well, I am not her, Mr. Potter. Now, answer the question. Why might Andromeda be located below Cassiopeia?"

"I don't know," I reply with a slight whine in my voice.

"Think about what I told you of Greek mythology."

"Well, Andromeda supposedly was Cassiopeia's daughter so maybe it's to show that."

"Excellent postulation, Mr. Potter," Snape says with a nod of approval. "Using that, why might Perseus be on her right?"

"Just because," I answer.

"Who was Perseus?"

"Her husband," I reply.

"And…?"

My eyes narrow on Snape. I can't understand why he's asking me these questions. I never had to do this with Professor Sinistra. Of course, I should have known that Snape would be even more difficult to have as a teacher. I think, though, only to satisfy his torturous tendencies.

"I don't know, Snape."

"Traditionally, a woman walks on a man's right side. Now, why might Perseus be on the left?"

"Oh, um, does it show that they're married?"

"Close enough, Mr. Potter," Snape replies before sighing. "Now, let us try again. Andromeda is located where in relation to Cassiopeia?"

"She's below Cassiopeia, so south."

"And Perseus?" he asks.

"She's to the left of him, so west."

"Excellent, Mr. Potter." He then glances up at the ceiling, which I follow suit. It is an exact replica of the night sky.

"Wicked," I say grinning. He only gives me a warning look before pointing to a series of closely clustered stars. "Is that Andromeda?"

"Yes," he replies before pointing to another set of stars, which is above Andromeda.

"Oh, wait, that's Cassiopeia." I then point to the right of the cluster of stars that I know now makes up Andromeda. "Which means that's Perseus," I say before glancing at Snape. He is nodding in approval. "That wasn't so hard."

"Astronomy never is," Snape drawls. The night sky then morphs back into the ceiling, and the room quickly transforms into Snape's sitting room. However, there are noticeable changes. It is a bit lighter than usual, and there is only the sofa and one armchair. "You still have an hour and half left of class. I recommend you start on your essay before you forget."

"How am I supposed to write that much about Andromeda, though? You only spent like two minutes on teaching it."

"I have faith in your abilities to open a book, Mr. Potter. Now, begin."

I watch Snape slowly walk away, which makes me sigh. There is no way I can write four feet worth of an essay on Andromeda. My eyes then narrow as a thought occurs to me. I turn back towards Snape who is watching me.

"Wait…you taught me three constellations today."

"Did I?" he responds raising an eyebrow. He then turns back to whatever he is doing.

Maybe he's right. Maybe I can write four feet on Andromeda. I walk to the sofa, sit down, pull out my quill and parchment, and start to write my essay. It doesn't take me long before I become engrossed in writing it. It's going to be my best essay yet. Even he won't be able to give me a Troll on it.

Andromeda

Named after the daughter of Cassiopeia, the constellation Andromeda sits high in the northern hemisphere of the night sky. It is to the south of the constellation Cassiopeia and west of the constellation Perseus. Its location could be a direct reference to Greek mythology where Andromeda, Cassiopeia, and Perseus all make appearances. A good way to remember its location is by thinking of how the sky is showing the family tree. As mentioned before, Cassiopeia was the parent to Andromeda. So using Greek mythology, it would make sense why Cassiopeia is above Andromeda. A parent is always above a child in family trees.

In terms of why Andromeda and Perseus are on the same line, you can also use the family tree. Perseus was Andromeda's husband. Something about traditions state that a wife always is next to her husband. This is probably to show the branching of family lines.

You do not need a telescope to see Andromeda unlike other constellations because it is the Andromeda galaxy basically, which is millions of light-years away from Earth. When looking at it, you see thousands of little dots. Astronomers thousands of years ago thought those dots at one time was a nebula, but it is not…