What do the two prongs of Hubble's tuning fork represent?

Start playing free

  1. Young and old ellipticals
  2. Nearby and distant galaxies
  3. Unbarred and barred spirals

🔒 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. Types of Galaxies openstax.org/books/astronomy/pages/26-2-types-of-galaxies 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