What does a blue cloud mean?

Is a constellation a group of stars? How is the duration of a year determined? What is the purpose for the ionosphere layer? When was We Are Night Sky created? How many Suns could fit across the diameter of Deneb? Who snared the sun in Maori mythology? What does viri galilaei mean? Why did Apollo have many affairs? A comet develops a coma because of what? How is a supernova formed and what are the key processes involved in its creation? What is the Hawaiian word for cloud? What is the process that carries the suns energy the rest of the way to the suns surface? How many times can you walk around the earth in 3 billion miles? What are the different kinds of constellations visible in the night sky? Can a sharp-eyed bird such as a hawk see through fog that's too dense for people to see through? How can watering your lawns at night help conserve water? Hypothezise how you can modeling the relative sizes and distances of the planets in the solar system? When would you most likely see a solar pillar? So why is it dark on the seabed if water is transparent? What is a rocket and how it works?