If you are interested in the colors of planets, you may also want to check out the color of plants on other worlds and the planetsâ true colors. Astronomy Cast has episodes on all of the planets, so start with Mercury and listen to all of them.
No, a human couldn't live without a brain because the brain controls everything in your body, so it tells your heart to beat, feet to move, eyes to blink, mouth to open, teeth to chew. If you don't have your brain to tell your heart to beat, your heart cannot pump blood. So your body really can't live.
Yes it is. Absence of meaning is the most enlightened form living. That is if one can be at peace with that. The human brain is wired in a way that we keep looking for meanings and purposes in life. We look so hard for them, we run so hard after them, we often forget to enjoy the moment, aren't at peace, can't just be.