ASTRONOMY Astronomers use an inverted vertical number line called the apparent magnitude...

ASTRONOMY Astronomers use an inverted vertical number line called the apparent magnitude scale to denote the brightness of objects in the sky. The brighter an object appears to an observer on Earth, the more negative is its apparent magnitude. Graph each of the following on the scale to the right.

• Visual limit of binoculars +10

• Visual limit of large telescope +20

• Visual limit of naked eye +6

• Full moon –12

• Pluto +15

• Sirius (a bright star) –2

• Sun –26

• Venus – 4