X

Trivia

Hard

The Most Volcanically Active Body In Our Solar System Is?

Triton
Mercury
Earth
Io

Answer: Io

Volcanic activity in our solar system is actually a pretty rare thing. Among all the inner and outer planets, the dwarf planets, and the moons scattered among them, the only bodies with confirmed volcanic activity are Earth, Triton (a moon of Neptune), Enceladus (a moon of Saturn), and Io (a moon of Jupiter)—though there is evidence of ancient volcanic activity on other bodies like Mars and suspected activity on Saturn’s moon Titan.

Among the currently active bodies, Io is far and away the most active. While volcanic eruptions on Earth are infrequent but terrifying, volcanic eruptions on Io are so fierce and numerous that the moon would surely appear as some sort of post apocalyptic hellscape. Thanks to the powerful gravitational pull of its host planet Jupiter as well as the nearby moons, Io is continuously deformed by the strong movement of internal tides, which create massive amounts of friction within the mantle of the moon and a correspondingly large amount of heat. The moon is covered with hundreds of volcanic vents that erupt with fearsome intensity.

When the New Horizons spacecraft passed by Io, for example, it recorded a volcano, seen in the photo here, ejecting huge plumes of material around 180 miles above the surface. The flyby observations correspond with observations on Earth that indicate huge eruptions that eject massive volumes of material (frozen vapor, volcanic snow, silicate rock, or molten sulfur) into the air are a common occurrence there.

Trivia

Easy

In the early 20th Century Many Aircraft Engines Were Started With A?

Trivia

Hard

The Only Author To Have A Simultaneous Chart Topping Book, Movie, And TV Show Is?

Trivia

Hard

Which Of These Bands Derives Its Name From Military Slang?

Trivia

Hard

In The 1920s, Which One Of These Industrial Titans Built An Entire City In South America?

Trivia

Hard

Historically, A “Devil’s Advocate” Was Employed To Argue Against?

Trivia

Easy

The Largest Single Source Of Dust Pollution In The United States Is A?

Trivia

Hard

In Ancient Greece, The People Of Boeotia Were Renowned For Their?

Trivia

Easy

Members Of Which Of These Species Are Known To Cannibalize Each Other In The Womb?

Trivia

Hard

The First Pop CD Featured What Band?

Trivia

Hard

In The Catholic Church, The Patron Saint Of Cooks And Chefs Is Also The Patron Saint Of?