What is theTrophosphere?

Why do sunspots appear dark? How is the Mars Rover powered? What instrument uses a convex concave and a flat lens? What time does the moon rise tonight in California? What scientist studies the function of the sun? How to Mount a Weather Vane? What is the highest mountain in Czech republic? When was Der Stern von Santa Clara created? How often does the moon come between the earth and the sun? Do not take reading from the thermometer in direct sunlight. why not? Million of drops of water suspended in the sky? What are two special features about Highlands on the moon? What was the ancient earth's atmosphere? Things in space that start with the letter a? How does gravity correspond to the bending of space-time fabric? How do you use vantage in a sentence? What was the name of the first mission to land a human on the moon? What are the main causes of sunburn and how can they be prevented? Why did Zeus place ursa major and ursa minor in the heavens? What direction do objects moving in the Southern Hemisphere curve?