Exploring Constellations and Coordinates

Which organization officially defines the boundaries of the 88 modern constellations?

• NASA

• International Astronomical Union (IAU)

• European Space Agency (ESA)

• Royal Astronomical Society

How many constellations are recognized by the IAU?

• 12

• 24

• 88

• 100

Which of the following is NOT a zodiac constellation?

• Leo

• Orion

• Pisces

• Sagittarius

The celestial coordinate system is most similar to which system on Earth?

• Longitude and Latitude

• Altitude and Azimuth

• Cartesian Coordinates

• Polar Coordinates

What is the name of the coordinate that measures the angle eastward along the celestial equator from the vernal equinox?

• Declination

• Right Ascension

• Altitude

• Azimuth

Which of the following best describes declination in the celestial coordinate system?

• The angular distance north or south of the celestial equator

• The angular distance east or west of the prime meridian

• The distance from Earth to a star

• The brightness of a star

How many zodiac constellations are there?

• 10

• 12

• 13

• 24

Which constellation contains the star Betelgeuse?

• Taurus

• Orion

• Gemini

• Leo

What is the unit of measurement for right ascension?

• Degrees

• Hours, minutes, and seconds

• Light years

• Parsecs

Which of the following is the correct symbol for declination?