Space⭐⭐ Curious Wonder
Why do astronauts train underwater?
Before some astronauts work outside a spacecraft, they spend hours in a giant pool beside full-size space equipment.
Take a guessCuriosity category
Space
Big questions from our sky, solar system, and the universe beyond.
Space⭐⭐⭐ Mind-Blowing Wonder
Why are there footprints on the Moon that may last millions of years?
Astronaut boots pressed into Moon dust more than fifty years ago. Those marks may still be sitting there an almost ridiculous amount of time later.
Take a guessSpace⭐⭐⭐ Mind-Blowing Wonder
Why does the Sun look yellow when it's actually white?
Most people draw the Sun yellow. In astronaut views from space, it looks much closer to white.
Take a guessSpace⭐⭐⭐ Mind-Blowing Wonder
Why are astronauts taller in space?
Astronauts can actually get taller while they're in space. Not forever, but enough to measure. How does leaving Earth change their height?
Take a guessSpace⭐⭐⭐⭐ Reality-Bending Wonder
Why is Venus hotter than Mercury even though Mercury is closer to the Sun?
Mercury is closer to the Sun. Venus still wins the hottest-planet contest. The scoreboard feels rigged.
Take a guessSpace⭐⭐⭐ Mind-Blowing Wonder
Why does the Moon look bigger near the horizon?
The Moon rises huge behind trees or buildings. Later, high overhead, it looks ordinary again.
Take a guessSpace⭐⭐⭐ Mind-Blowing Wonder
Why can't sound travel through empty space?
Space stories are full of booms and rumbles. Real space can be violent too, but a nearby listener would have a problem.
Take a guessSpace⭐⭐⭐ Mind-Blowing Wonder
Why are black holes invisible?
Something can shove stars around, heat nearby gas until it blazes, and still refuse to show itself.
Take a guessSpace⭐ Everyday Wonder
Why is Mars red?
Look up at Mars through a telescope, and it has that red-orange glow. What gave a whole planet such a famous color?
Take a guessSpace⭐⭐⭐ Mind-Blowing Wonder
Why does Saturn have rings?
Saturn has a bright ring system wrapped around it, while Earth very much does not. How did one planet end up with that strange halo?
Take a guessSpace⭐⭐⭐ Mind-Blowing Wonder
Why do astronauts float?
In orbit, a pencil, a sandwich, and an astronaut can all drift across the room like the floor forgot its job.
Take a guessSpace⭐⭐ Curious Wonder
Why do stars twinkle?
A star can shine steadily for years, then seem to flicker the moment you look up.
Take a guessSpace⭐⭐ Curious Wonder
Why is the sky blue?
Sunlight looks white. Air looks clear. So where is all that blue coming from?
Take a guessSpace⭐⭐ Curious Wonder
Why does the Moon seem to follow you?
Ride in a car at night and trees rush past the window. The Moon just keeps hanging there, as if it came along for the trip. Why?
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