The majority of stars emit most of their electromagnetic energy as visible light, the tiny portion of the spectrum to which our eyes are sensitive. Because wavelength correlates with energy, the color of a star tells us how hot it is: red stars are coolest, blue are hottest.
If you qualify, the Army will pay up to 33.33 percent of your principal balance each year for three years. You could receive up to $65,000 in loan assistance. Note that you can only use this money to pay off federal student loans, such as Direct, FFEL, and Perkins Loans.
Some borrowers, of course, pay substantially more every month. In the second quarter of 2015 the average payment on student loans for 20 to 30 year olds was $351. The average is well above the median (the point at which half of payments are higher and half are lower) because a smaller subset of borrowers took out much larger loans, typically to pay for graduate school.