AhaBulb: Stuff Everyone Should Know · ahabulb.com/aero-universe-age
About how old do scientists think the universe is?
- About 13.8 billion years
- About 4.6 billion years
- About 1.4 billion years
🔒 The answer is for AhaBulb members. Members see the answer, why it's right and the official sources for every card of Stuff Every CAP Aerospace Cadet Should Know, plus timed practice exams.
The first 50 cards of every test are free to play.
Like this card?
References
- NASA Science: Universe Overview science.nasa.gov/universe/overview Checked 2026-10-10.
Think this answer is wrong? Tap "Challenge this answer" on the card in the game and tell us why.
More stuff everyone should know
That's stuff everyone should know.