Astronomy Professor 1-7 | Mother of Two
- Blood Status
- Relationship Status
- Sexual Orientation
Professor Harrington wondered how the fifth years were fairing, they seemed to all being doing well in their lessons. "This week we are moving on from the Moon and going further out to comets. They are a rather rare sight but we are effected everyday by them. They have tails that stretch across the solar system as they come close to the sun, warming their icy cold centers," Professor Sarah started on this week's lecture. She hoped the students wouldn't be bored by another, but she knew next week would be full of exciting lessons if they only make it through this year. "Comets are often during their formation created nearer to planets and as smaller planetary bodies they can be referred to as planetesimals. Made of small specs of dust and ice fused together forming larger bodies. Comets are these planetesimals that were pushed to the brink of our solar system during the time of formation," Sarah spouted out feeling as thought it were all a lot to say. She hoped the students understood.
"Think of them as very giant dirty snowballs, and that's basically what they are in a simple sense. They come from two places The Kuiper Belt and the Oort Cloud, as you can imagine they come from a very great distance away," Sarah said to the class. "Now occasionally one of these planetesimals will be nudged or kicked from their typical orbit causing them to head towards the center of the solar system, those are what we then would refer to as comets. This is when the tails will form as the inner section is much warmer from the Sun than the farther reaches of the Solar System," Sarah said with a smile, she found all this talk about great travel very exciting indeed.
"Now, a comet doesn't live forever once it's begun this new orbit that brings it close to the Sun. While on the rare chance a comet runs into any of the planets, it's more likely the comet will continue to circle the Sun for thousands of years each time melting within the Inner Solar System becoming smaller and smaller until it is nothing at all," Sarah said commented on the life of the comets. "Now on average a major comet can be seen from Earth around every five years, however each comet is different including the length of time it is visible and the Hemisphere you can see the comet in varies. Also depending on where the comet is coming from the time between visits will vary greatly."
Looking to the watch on her arm, Sarah was surprised by the amount of time had passed. Last week it seemed she was able to fit so much in but this week it seemed comets took more time than she had thought. "Oh, looks like we've run out of time for this week, uh, no homework! Enjoy your time off of that by studying the skies!" Professor Sarah said waving her wand to open the door and see the students out.
Please post an attendance post with your student!