Who is thia in first light?

Does the earth and the moon have the same amount of mass? What planet has density less than water? What happens at Helios island? How have the Aurora Borealis changed over the years? What is the value of a 1988 commemorative space shuttle coin? What country's rocket program became the basis for the space programs of the US and the ussr? Do clouds breathe? Does the moon ever rise in the west? How many stars are double or triple stars? What is the definition of streak test? What do you call the person who flies the spaceshuttle? In astrophysicist chronicles battle aver Pluto what reason Dr Tyson give for the excluding Pluto from the museum exhibit? Where did moonshine originate? What layer of the atmosphere is the air very thin and has little moisture? When did the first people visited the moon? Is the larger the volume of an object the more it weighs true? Rank the five terrestrial worlds in order of size from smallest to largest? What did Galileo contribute to scientific thinking and knowledge? Who was the first Russian to reach the moon? Why does Jupiter radiate more energy into space than it receives from the sun?

Who is thia in first light?