Follow your curiosity

What discovery has been shared with you?

FACTREE gives you something interesting to discover every day — and something worth talking about together.

Start with one fact. Explore it, go deeper, then follow whichever branch catches your imagination.

Choose subjects for a surprise

Exploring any topic

Begin your discovery

Your next discovery is one click away.

Choose one or more subjects above, or leave Any Topic selected and let curiosity decide.

Astronomy

What makes a day on Venus longer than its year?

Quick fact

Venus takes 243 Earth days to rotate once on its axis, but only 225 Earth days to orbit the sun—so a 'day' outlasts a 'year' by 18 Earth days.

Why this is interesting

On Venus, you would celebrate your birthday before you experienced a single sunrise—its day is longer than its year.