The teacher blathered on and on and on about the solar system. What is the figurative language being showed here

Hyperbole

Explanation:

The hyperbole, also called auxese, is a figure of speech used in figurative language. This type of figure of speech represents an expression of dramatic exaggeration in the sentence. An example of this can be seen in the sentence shown in the question above, where the speaker exaggerates when stating that the teacher spoke non-stop, since this is not possible and that this represents an increased idea of how the teacher spoke, that is, an exaggeration.

it is believed to be alfred, lord himself

it was surely an odd creature that one made up by reading the historians first and the poets afterwards a worm winged like an eagle; the spirit of life and elegance and charm,   in a kitchen chopping up suet. but these creatures, monst'r however entertaining to the imagination, hast no existence in fact. what one might doth to bringeth h'r to life wast to bethink poetically and prosaically at one and the same moment,   thus keeping in toucheth with fact—that the lady is mrs martin, ag'd thirty-six, did dress in blue, wearing a black coxcomb and brown shoeth; but not losing sight of fiction eith'r—that the lady is a vessel in which all s'rts of spirits and f'rces art coursing and flashing p'rpetually. the moment, howev'r, yond one tries this method with the elizabethan mistress, one brancheth of illumination fails; one is did hold up by the scarcity of facts.   one knoweth nothing detailed, nothing p'rfectly true and substantial about h'r.   hist'ry scarcely mentions h'r.   and i did turn to professeth'r trevelyan again to seeth what hist'ry meanteth to that gent.   i hath found by looking at his chapt'r headings yond t meanteth.