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.
In 1991, The Spectator held a competition for new answers, among the prize winners were: because one has flapping fits and the other fitting flaps; because one is good for writing books and the other better for biting rooks; and because a writing desk is a rest for pens and a raven is a pest for wrens.