Visible Stars in the Night Sky Welcome! You are encouraged to register with the site and login (for free). When you register, you support the site and your question history is saved.The number of visible stars in the night sky, T, can be estimated by the formula where N is the number of stars counted through a tube with length L, in centimeters, a mouth of area A, in square centimeters. Based on the formula, what is the estimated number of visible stars in the night sky if 240 stars are observed through a tube 10 feet long with a mouth of radius of 4 feet? (1 foot = 30.48 centimeters) 182,880 7,000 6,000 5,800 500 Review Answer