What is a scratus?

Is Mae jemison Charles jemison dead or alive? How long did the astronauts spend on the moon? What is the magnification of ocular 15x by objective 15x? What would happen to life on earth if there were no producers? How fast does the world revolve around the sun? Which 4 planets rotate the fastest? Cgandrayaan-1 was successfully launched in the year? What planet has craters cliffs and a weak magnetic field? How high is the magnetosphere? Who were the last men to walk on the moon? What are some devices used in space exploration? How long did Apollo 15 last? What are you doing during windy season? How long does Helium Flash in Stars Solar Masses last? How did altostratus cloud get its name? The action and reaction forces involved during rocket work? How many light year would it take to get from one end of the milky way to the other? Is the moon a white dwarf? When and where was the Cassini built? What is a cloud called that is tall white and puffy?