The bizarre orientation of the planet, which orbits the sun tipped on its side, reveals that its inner core has a stronger influence on its weather patterns than the distant star. The green and blue regions show where the atmosphere is clear, allowing sunlight to penetrate deep into Uranus.
One creative answer to why is a raven like a writing desk is they both come with inky quills. Lewis Carroll never intended an answer to the question of why a raven is like a writing desk. The raven-writing desk riddle hails from Lewis Carroll's Alice's Adventures in Wonderland.
Although the raven was not always a bad symbol in ancient cultures, in literature, the appearance of a raven generally does not mean that good things are to come. In Edgar Allen Poe's poem The Raven, a man is so bothered by the foreboding presence of a raven over his door that he literally drives himself insane.