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This figure shows frames from a computer simulation of star formation, starting at the left with a large molecular cloud measuring more than a light-year across. What is happening as time passes (from left to right)?

Based on its surface temperature of 5,800 K, what color are most of the photons that leave the Sun’s surface?

Although it is difficult to tell from our vantage point inside the galaxy, astronomers suspect that the Milky Way is a barred spiral.

A binary system that looks like the one shown in this painting should shine brightly in X rays. Which one of the four labeled regions is the source of most of the X rays?

On a cosmic calendar, in which the history of the universe is compressed into one year, how long is the average human life span?

Which of the following statements about globular clusters is false?

  This painting represents the Sun and planets (and two dwarf planets) of our solar system. What is not to scale in this painting?

Sunspots:

Johnson Marine has the following costs and expected sales for the coming year. Johnson is considering a number of different methods to determine the price of its product.   Total Costs Variable Manufacturing $ 2,350,000 Variable Selling and Administrative 750,000 Plant-level Fixed Overhead 1,200,000 Fixed Selling and Administrative 600,000 Batch-level Fixed Overhead 200,000 Total Investment in Product Line 10,000,000 Expected Sales (units) 20,000 If Johnson determines price using a 40% markup of full manufacturing cost, the price is:

Milk is a good source of calcium but a poor source of iron. Meat is a good source of iron but a poor source of calcium. A diet incorporating both of these foods demonstrates what characteristic of a healthful diet?