Curiosity starts with a strange question.
Explore the unexpected side of the universe, life, matter, and the world around you. Every story begins with a genuine scientific oddity.
Explore by science
Space & Universe
Strange worlds, impossible distances and cosmic surprises.
Black holes · Gravity & orbits · Planets · Stars & timePhysics & Forces
When motion, light and energy defy intuition.
Gravity · Light & colour · Sound · MotionChemistry & Matter
Unexpected behaviour hiding in everyday substances.
Water & ice · Atoms · Reactions · Unusual materialsLife & Biology
The peculiar adaptations and tricks of living things.
Animals · Plants · Human body · EvolutionEarth & Nature
The oddities of our planet, oceans and atmosphere.
Weather · Oceans · Geology · ClimateMind & Senses
Why our brains and senses sometimes fool us.
Vision · Memory · Perception · SleepUnexpected discoveries
Why do astronauts float if gravity still exists?
Space looks gravity-free. The truth is stranger: orbit is a kind of falling.
Uncover the answer →How can a day on Venus be longer than its year?
Venus spins so slowly that one rotation takes longer than one trip around the Sun.
Uncover the answer →Why does ice float when most solids sink?
Frozen water breaks the rule followed by many other substances.
Uncover the answer →Can plants count without a brain?
Some plants appear to track repeated touches before responding.
Uncover the answer →Can light slow down?
Light has a famous speed limit, but that is not the whole story.
Uncover the answer →Why can your eyes see something that is not there?
Your brain interprets images instead of simply recording them.
Uncover the answer →Why is the sky blue instead of violet?
Shorter wavelengths scatter strongly, so why does blue dominate our view?
Uncover the answer →