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Quiz about Cassinis Circus
Quiz about Cassinis Circus

Cassini's Circus Trivia Quiz


Ladies and Gentlemen! Welcome to Cassini's Circus! All the photos in this quiz were taken by the Cassini spacecraft at Saturn, the Ringmaster of the Solar System! Come on in and allow Cassini to entertain you with Saturn's many unique moons!

A photo quiz by RedHook13. Estimated time: 4 mins.
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Author
RedHook13
Time
4 mins
Type
Photo Quiz
Quiz #
397,377
Updated
Dec 03 21
# Qns
10
Difficulty
Average
Avg Score
7 / 10
Plays
258
Last 3 plays: linkan (10/10), leith90 (8/10), gogetem (7/10).
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Question 1 of 10
1. This moon may be small, but it has a very important job. It helps to keep Saturn's rings nice and tidy by sweeping up loose material. Do you know its name? Hint


Question 2 of 10
2. Next, we see two of Saturn's most talented choreographers. They swap orbits every four years without colliding with one another. Can you name these two dancers? Hint


Question 3 of 10
3. Now, I know what you might be thinking! Why is the Death Star in Cassini's Circus? Well, that's no Death Star, it's a moon. Which one is it? Hint


Question 4 of 10
4. Now we come to a world that could potentially harbor life. This small moon has astounded astronomers with its active geysers. Which moon is this? Hint


Question 5 of 10
5. These two moons are known as Tethys and Dione. They both have two smaller companions that occupy the same orbit. What do astronomers call them? Hint


Question 6 of 10
6. We know that Saturn has rings, but could its second largest moon also have them? What is the name of it? Perhaps singing will help you remember. Do, ?, Me, Fa, So!

Answer: (One Word - four letters)
Question 7 of 10
7. Next up, we have this oddity of a moon that looks like a giant sponge. It is one of the largest irregular shaped moons in the Solar System. What is the name of it? Hint


Question 8 of 10
8. This moon should have been named Dr. Jekyll and Mr. Hyde. Its unique surface features a distinctive light and dark side. What is its real name? Hint


Question 9 of 10
9. This next moon might have been a comet if it wasn't for Saturn. It shares its name with a character from the TV show, "Friends". What is its name? Hint


Question 10 of 10
10. Finally, we come to the main attraction. It is Saturn's largest moon and the only moon known to have a thick atmosphere. What is the name of it?

Answer: (One Word)

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Most Recent Scores
Nov 21 2023 : linkan: 10/10
Oct 28 2023 : leith90: 8/10
Oct 26 2023 : gogetem: 7/10
Oct 16 2023 : MissCirrus: 7/10

Quiz Answer Key and Fun Facts
1. This moon may be small, but it has a very important job. It helps to keep Saturn's rings nice and tidy by sweeping up loose material. Do you know its name?

Answer: Pan

Pan was discovered on July 16, 1990 by NASA Scientist Mark Showalter by analyzing images taken by Voyager 2. The small ravioli shaped moon is approximately 28 km (17 mi) in diameter. It is known as a shepherd moon and is one of the closest known moons to Saturn. The gravity of Pan sweeps up material from within Saturn's rings, creating the Encke Gap of Saturn's A-Ring.
2. Next, we see two of Saturn's most talented choreographers. They swap orbits every four years without colliding with one another. Can you name these two dancers?

Answer: Janus and Epimetheus

Janus and Epimetheus are two of Saturn's irregular shaped moons that were discovered in December, 1966. Janus is the larger of the two with an average diameter of approximately 180 km (112 mi). Epimetheus has an average diameter of 116 km (72 mi). Janus and Epimetheus have a unique interaction with one another. Every four years the two moons swap orbits around Saturn passing as close as 10,000 km (6,200 mi) to one another.
3. Now, I know what you might be thinking! Why is the Death Star in Cassini's Circus? Well, that's no Death Star, it's a moon. Which one is it?

Answer: Mimas

Mimas was discovered by British astronomer William Herschel on September 17, 1789. The diameter of Mimas is approximately 396 km (246 mi). The most distinguishing feature of Mimas is a large impact crater discovered in 1980 by the Voyager spacecraft. The crater was named Herschel after Mimas' discoverer.

The Herschel crater causes Mimas to resemble the Death Star from "Star Wars". It is coincidental as the first "Star Wars" film was released in 1977, three years before the crater was discovered.
4. Now we come to a world that could potentially harbor life. This small moon has astounded astronomers with its active geysers. Which moon is this?

Answer: Enceladus

Enceladus was discovered by William Herschel on August 28, 1789. The moon is approximately 500 km (310 mi) in diameter. When the Voyager spacecraft flew by Saturn, Enceladus was not really studied in depth. However, when the Cassini spacecraft came to Saturn, it discovered active water-based geysers on the small moon. Enceladus is thought to have an underground mantle of liquid water, similar to the Jovian moon Europa.

This makes Enceladus a strong candidate for finding life on another world. The material ejected from Enceladus' geysers help form Saturn's E-Ring.
5. These two moons are known as Tethys and Dione. They both have two smaller companions that occupy the same orbit. What do astronomers call them?

Answer: Trojan moons

Tethys (on the left) and Dione (on the right) were both discovered by Italian astronomer Giovanni Cassini (the man whom the spacecraft was named after) on March 21, 1684. They are very close in size to one another. Tethys, which is closer to Saturn, has a diameter of approximately 1,060 km (658 mi). Dione is slightly larger with a diameter of 1,120 km (696 mi). Both moons were discovered to have two Trojan moon companions (smaller irregular shaped moons that occupy the same orbit).

The moons Calypso and Telesto are the Trojan companions of Tethys and the moons Helene and Polydeuces are the Trojan companions of Dione.
6. We know that Saturn has rings, but could its second largest moon also have them? What is the name of it? Perhaps singing will help you remember. Do, ?, Me, Fa, So!

Answer: Rhea

Rhea is the second largest moon of Saturn. It has a diameter of 1,527 km (949 mi). It was discovered by Giovanni Cassini on December 23, 1672. When the Cassini spacecraft observed Rhea, it was speculated that the moon might have a ring system of its own.

However, there was not enough data taken by Cassini to either confirm or deny that a ring system around Rhea currently exists. Astronomers might have to wait for a future mission to finally know for sure.
7. Next up, we have this oddity of a moon that looks like a giant sponge. It is one of the largest irregular shaped moons in the Solar System. What is the name of it?

Answer: Hyperion

Hyperion was the first irregular shaped moon to be discovered in 1848. It is also one of the largest irregular shaped moons in the Solar System. It has an average diameter of approximately 270 km (168 mi). Neptune's moon, Proteus, is thought to be larger, but it's debatable.

Instead of rotating around a common axis, Hyperion seems to tumble around like a giant potato. This tumbling makes Hyperion's orbit very erratic.
8. This moon should have been named Dr. Jekyll and Mr. Hyde. Its unique surface features a distinctive light and dark side. What is its real name?

Answer: Iapetus

Iapetus is Saturn's third largest moon and was discovered by Giovanni Cassini on October 25, 1671. It is only slightly smaller than Rhea with a diameter of approximately 1,468 km (912 mi). Iapetus has a few distinguishing features. The first is that the moon has a distinctive bright and dark hemisphere. Iapetus also features a 20 km (12 mi) tall ridge of mountains that stretch along the moon's equator. Iapetus is tidally locked to Saturn, which means only one side faces the planet throughout the moon's orbit.
9. This next moon might have been a comet if it wasn't for Saturn. It shares its name with a character from the TV show, "Friends". What is its name?

Answer: Phoebe

Phoebe is one of the outermost moons of the planet Saturn. Its discovery was confirmed on March 17, 1899. Phoebe is an irregular shaped moon with an average diameter of 212 km (132 mi). It is believed that Phoebe may be a captured object that originated from the Kuiper Belt. Phoebe has a retrograde orbit that is inclined 152 compared to Saturn's equator. Phoebe was the first object encountered by the Cassini spacecraft as it approached Saturn in 2004.
10. Finally, we come to the main attraction. It is Saturn's largest moon and the only moon known to have a thick atmosphere. What is the name of it?

Answer: Titan

Titan is the largest moon of Saturn and the second largest moon in the entire Solar System. It has a diameter of 5,148 km (3,199 mi). Titan was discovered on March 25, 1655 by Dutch astronomer Christiaan Huygens. Titan is the only moon in the Solar System known to have a thick atmosphere, like Earth's.

The atmosphere consists of mostly nitrogen. It is speculated that Titan may have liquid methane on its surface that forms lakes and rivers in the same way water does on Earth. The Huygens space probe was launched with Cassini in order to study the moon up close.

In 2004, it sent back stunning images as it descended through Titan's atmosphere.
Source: Author RedHook13

This quiz was reviewed by FunTrivia editor rossian before going online.
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This quiz is part of series RedHook's Universe:

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  5. Pluto, the Dwarf Planet that Could Easier
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  7. Our Crooked Solar System Average
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  9. I'm Ceres and Don't Call Me an Asteroid Average
  10. Cassini's Circus Average
  11. Astrophysics for People in a Hurry Average
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