Astronomy 4:1

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Professor Zumwalt was excited to be working with her fourth years. It was the last semester she'd have them in class, and they were learning vital information about stars that would assist them in their OWLs and future studies.

“Welcome back to another year! This year will be our last together before you move back to studying with Professor Harrington," she said, knowing that this was one of the last classes to have actually had the woman prior to Adorah. "I hope you all are ready because we've got a lot to learn this semester, and we're jumping right in!” Adorah said, noticing some of the students rolling their eyes, but others looked excited to learn more. She set up the projector with a wave of her wand so images of the stars they discussed would be visible on the board.

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Protostar: a contracting mass of gas that represents an early stage in the formation of a star. These are formed in great clouds of gas and elements. Before the star begins to produce magical essence, it is considered a protostar, meaning it is not fully burning bright as it will in a few thousand years.
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Binary Stars: two stars orbiting a common center of mass. The brighter star is referred to as the primary star (A) and the other secondary :)cool:. Most stars visible in the night sky have a secondary companion, and some cases have multiple. Somewhere between one-third to one-half of all stars are binary stars. The star Sirius is a binary star being orbited by a smaller white dwarf.


Dwarf Stars: any star of average or low luminosity, mass, and size.
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Brown Dwarf Stars: stars that did not have enough gas/mass put into them to burn and they quickly radiate out their heat and become much cooler. Some brown dwarfs are quite similar in size to Jupiter, but their formation is different, and despite being very similar gas giants in the sky, they are classed as different objects.
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White Dwarf Stars: also called degenerate dwarf, is a stellar core remnant that is very dense.

Eventually, they will all become black dwarfs which are non-luminous dead stars.

Finishing the lecture, Adorah smiled at her students. Most of them were still awake, although one was nodding off every few seconds in the back. “We will stop here and continue our discussion on types of stars next week,” she said. She'd ended the lesson a little earlier than expected, but she also wanted to make sure students were paying attention when she delivered important information. “No homework this week, but I want you all to make sure you’re reading your textbook and the chapter about the stars we discussed today,” Adorah finished, dismissing the students.

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For full credit, RP the lesson.
 
Apolline was very keen for the new semester, she had her classes and she was more than interested in learning. She had enjoyed the break, and had enjoyed being able to spend time with her mum. She’d used the time as well as she could, but was happiest now being back. Her brother had arrived at the school, and had been sorted. She was pretty pleased to have him around, though also pretty keen to not be too involved in him. She just knew she had to look out for him. Which Apolline knew she could do. Apolline grabbed the last few things she needed for the day ahead and then went to class.

Apolline walked into the astronomy classroom and took her usual spot in the room. She glanced up at the professor as the woman got started and they were just getting right into it. Right into the actual lesson which she didn’t mind at all. Apolline nodded eagerly, and took her quill and parchment and began just writing down what the professor was telling them about the stars, making sure that she got all of it down as the professor spoke. Eventually the lecture was wrapped up and she was able to pack up and head out of the room.
 
Kyousuke was glad to hear they wouldn't be wasting their time on revision. He liked it when new information was put to the forefront. He got out his supplies and began to take notes as the professor spoke. Stars, the subject turned out to be. Interesting. Kyousuke wasn't one to be terribly passionate about astronomy but it always did remind him of his uncle, staying up past bedtime and looking to the skies, learning the constellations. They were good memories. Kyousuke shook off the thoughts, determined to remain concentrating. He got down all the information and soon the lesson ended. Kyousuke packed away his things and left to do more study.
 
Violet wasn't so happy to be back at Hogwarts and was more nervous. She had to try and make an effort this year to make friends, to carry on her lie to her sisters that she had so many. It was going to be difficult, but at least she had earned herself secretary of Heta Omega, so that was a good starting point in making herself look popular. The Ravenclaw had classes to attend now however, so she packed her backpack and headed to them.

Violet entered the Astronomy Tower with a yawn and took her usual seat within the room. She took out her writing equipment as the professor started the lesson quickly and announced a lecture. She spoke about stars, which was a little boring at first, and became even more boring as it went on. Violet found herself drawing stars in her notes rather than actually taking them. And as the professor stated they would be doing this again next lesson, she sighed loudly and exited the classroom as soon as dismissed.
 

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