[ WP ] I 'm a medieval farmer with no concept of space . Explain the basics of astronomy to me .

Harry stepped outside with his pint, and breathed deep the crisp autumn oxfordian air. *A beautiful night*, he thought, as he stared up into the deep expanse above, twinkling with stars. 
 `` Do - do you want to learn about astronomy, farmer?'' A voice and a chuckle came from one of the tables laid on the street. 
 `` I'm sorry?'' Harry turned politely to face his addresser. Sat at the table, cloaked in black, were two young men, chuckling to one another and passing cheap wine between them. A flash of irritation hit him, as he realised who addressed him; that most obnoxious of sub-species, *students*. 
 `` *I said*... would you like to learn about astronomy, farmer? After all, you *are* ignorant of the majesty of the heavens.'' 
 A blank look, that swapped to an obsequious smile on Harry's face as he worked out his response. 
 `` Oh yes, zur,'' he started, accent slipping to a mimicry of his father's. `` Oh yes, I would loike to learn about the ztars. Oi've alwayz wondered about them, but never got no learning. No zur.'' The students grinned, and one took a breath to begin his patronising lecture. 
 `` Well, you see...'' 
 `` After all, zur,'' Harry interrupted, `` it's not loike as a farmer Oi learnt to read the skoi to know the zeasons, or the weather. Now moi brother, *he* knowz the skoi. A sailor, see?'' The two lads looked nonplussed. `` They've been navigating boi the ztars for years. And he'd never tell me nothin'. As a farrmer, why, Oi've never got lost walking and used Polaris to orientate moiself. No zur.'' The glares indicated they had caught on. He grinned. 
 `` *How* dare you? Do n't you know who we are?'' Demanded one of the pair, slamming his fist on the table. 
 `` Yes I do.'' Harry answered. `` You're students, lads who are unaware of your surroundings...'' 
 ``... and out after curfew.'' A meaty paw dropped on each of the students' shoulders. 
 `` Evenin', Porter.'' Harry nodded to the college enforcer. 
 `` Having a nice chat with the lads?'' The Porter lifted the two students from their stools by the back of their cloaks, making them hang like two disgruntled puppies. 
 `` Oh, just educating me on the finer points of astronomy.'' The porter snorted. 
 `` Indeed? Well, they'll be sleeping it off in the cells and be in the university dock in the morning. Perhaps that'll curb their lecturing instincts.'' The porter strode off into the night, dragging the two students along. 
 Harry took a sip of his pint, and breathed the evening air. He looked up, and gazed at the night sky. 
 *I do wonder though, * his thoughts wandered as he sipped his pint, *why DO the stars twinkle? *
