AhaBulbStuff Everyone Should Know
AhaBulb: Stuff Everyone Should Know · ahabulb.com/astro-europa-subsurface-ocean

What likely lies beneath Europa's icy shell?

Start playing free

  1. A liquid iron surface
  2. A hollow vacuum
  3. A salty liquid-water ocean

🔒 The answer is for AhaBulb members. Members see the answer, why it's right and the official sources for every card of Stuff Every Astronomer Should Know, plus timed practice exams.

The first 50 cards of every test are free to play.

Play the free cards See membership

Like this card?
Play the game

References

  1. Europa Facts science.nasa.gov/jupiter/jupiter-moons/europa/europa-facts Checked 2026-10-10.

Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.

Test yourself in the game

Astronomy & SpaceWhat are Saturn's bright main rings primarily made of?Astronomy & SpaceWhat do Enceladus's south-polar jets spray into space?Astronomy & SpaceWhich kind of light has the shortest wavelength, under 0.01 nanometer?

That's stuff everyone should know.