Question 1

True or false: Juno’s name comes from the Roman goddess who was Jupiter’s wife.

Accepted Answer

True. In mythology, Juno could see through Jupiter’s clouds; the probe’s name symbolically represents peering through Jupiter’s atmosphere.

Question 2

True or false: Juno's orbit takes the Juno spacecraft closer to Jupiter's cloud tops than any previous spacecraft.

Accepted Answer

True. Juno orbits in a highly elliptical path, skimming just 4,200 km above Jupiter’s clouds, far closer than Galileo or Voyager.

Question 3

True or false: Juno took a direct, five-year flight path from Earth to Jupiter.

Accepted Answer

False. Juno used a gravity assist from Earth in 2013, looping back for a speed boost, taking about five years total.

Question 4

True or false: Juno will end its mission by deliberately crashing into Jupiter in 2025.

Accepted Answer

True. To avoid contaminating Europa, Juno is scheduled to deorbit into Jupiter’s atmosphere in September 2025.

Question 5

True or false: Juno is powered by a nuclear battery, similar to the Cassini probe.

Accepted Answer

False. Juno uses three large solar panels, not nuclear power, because Jupiter’s distance still receives enough sunlight for its efficient design.

Question 6

True or false: Juno’s instruments include a camera that the public helps aim via voting.

Accepted Answer

True. The JunoCam is a public outreach tool; citizen scientists vote on targets, and images are processed by volunteers.

Question 7

True or false: Juno measures Jupiter’s magnetic field using a giant magnetometer on a boom.

Accepted Answer

True. A fluxgate magnetometer extends 10 meters from the spacecraft to avoid interference, mapping Jupiter’s powerful field.

Question 8

True or false: Juno discovered that Jupiter has a solid, rocky core the size of Earth.

Accepted Answer

False. Juno’s gravity data suggests a fuzzy, partially dissolved core, not a solid ball; its exact nature is still debated.

Juno spacecraft Trivia Questions