What is afferestation?

What changes are happening to the atmosphere? What causes a star to twinkle in the night sky? Would you like to go into space? What is the correlation of iris diaphragm condenser and working distance of the objective lenses? What is sea level on Mars? What was the first mountain called? Do Mar's moons have any atmosphere? Where do sun chips come from? Why do you see different phases of the moon on different days of the month? What important achievements did Robert Scott do? What is the amount of the moon that is always lit except during a lunar eclipse? How many year sun will take to 1 revolution around the milky way? Who foud out why the moon stays up in the sky? How long will it be till you go to Mars? Why can you hear sounds from farther away on a cool night? at which temperature the water condense? What is a pair of stars which appear to form a double star but do not? How much does it cost to make a space suit? Why did the alarm go off in Apollo 11? Would a light source moving away from Earth appear blue shifted or red shifted?