Where did stars start?

Is a comet round? Why isn't a galaxy's size useful in determining it's distance from earth? What is the relationship between the sun and other planets? What harmful rays from the sun cause sunburns? Is diamond are reflectors? How can one become an astrophysicist? Can you extend the concept to figure out what elements are in stars? Will the world end when the sun becomes red giant? Why was John Glenn Jr so important in American exploratation? How do become a mutant? What is it called when money spent exceeds money received? What caused Mars' atmosphere to decinagrate and lose all its liquid water? What does celestrial mean? What do you call people that operate on the rockets in the control room? Why stars so important for the sky? What 2 things can't the Hubble observe? Which forecasting method uses a cause-and-effect relationship to predict weatherything? A total solar eclipse is visible only on a small area of? How many seconds are in 13.7 billion years? Which planet in your solar system has the most violent weather?