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.
Why is a raven like a writing desk? Because one is nevar backwards and the other is always for words. The really clever thing about this is that the riddle answer sets the scene for the entire tea party, which is about time, which is never backwards and always forwards. It's pure genius on the part of Lewis Carroll.