1. Saturn's biggest moon is:

a) best seen without a telescope.

b) half the size of Earth.

c) 808 miles from Hawaii.

2. Titan, one of 30 moons orbiting Saturn:

a) was discovered by Berkeley astronomers.

b) is much smaller than our moon.

c) has a temperature of minus 297 degrees Fahrenheit.

3. The distant moon is unable to support life because:

a) its atmosphere lacks oxygen.

b) it's too cold.

c) both a and b.

4. Caltech scientist Michael Brown thinks Saturn's moon:

a) is the most earth-like body in the solar system.

b) will soon disappear.

c) has an unchanging surface.

5. Astronomers used telescopes to view Titan from:

a) atop an active volcano.

b) observatories on Hawaii's Big Island.

c) the California Institute of Technology.

6. For the first time, researchers on top of Mauna Kea spotted clouds:

a) floating over Titan's South Pole.

b) partially hidden by a thick haze.

c) filled with nitrogen.

7. The clouds observed over Titan are unusual because they:

a) are filled with water.

b) were formed by evaporation.

c) appear to be made up of raindrops.

8. Any precipitation falling on Titan would be:

a) methane rain.

b) ethane hail.

c) similar to that found on Earth.

9. Now that Saturn's moon is clearly visible, NASA will:

a) launch the Cassini spacecraft.

b) send astronauts to the second largest planet.

c) be able to learn many new things about Titan.

10. In 2004, NASA plans to:

a) land a probe on Titan's surface.

b) rename Saturn's biggest moon Huygens.

c) design a set of orbiting parachutes.

Answer Key: 1. b, 2. c, 3. c, 4. a, 5. b, 6. a, 7. b, 8. a, 9. c, 10. a