Space & the Universe
How many years old is the universe?
Answer
13,800,000,000 years
If the universe's 13.8-billion-year history were compressed into one calendar year, modern humans would appear in the last 10 minutes of December 31 — and all of recorded history in the final dozen seconds before midnight.
Source: ESA/NASA Planck mission data
Enjoyed that? Off By Ten is a free daily game: five questions like this one, scored by how close you land. No account, no app.
Play today's puzzle →