International Space Station: Sixteen Sunrises
The expanded guide to the Sixteen Sunrises episode, a floating evening aboard the space station, where morning comes sixteen times a day. Choose the age that fits your listener.
For ages 4–6
The big idea
Far above your head, higher than any plane can fly, a spaceship called the International Space Station is circling the Earth. Astronauts live and work inside it, floating from wall to wall.
The station moves so fast that it loops all the way around the Earth in about ninety minutes. That means the crew sees the sun come up about sixteen times every single day, a sunrise every hour and a half.
There's no up or down in space, so everything floats, including the astronauts. At bedtime they zip into sleeping bags clipped to the wall, arms drifting in front of them, and sleep in mid-air.
Wonder together
- You'd see sixteen sunrises in a day. Which one would you save, if you could keep just one?
- There's no up or down up there. What would you do first if your whole room had no floor?
- The astronauts sleep floating, clipped to the wall. Where's the coziest place you've ever slept?
- The station circles the whole Earth in ninety minutes. What would you look for out the window?
- Who do you think is awake, or asleep, above the sky right now?
Let's try it
Float Everything
You'll need
- A bathtub, sink, or big bowl of water
- A few small waterproof toys
- Your imagination
What to do
- Put some small toys in the water and give them a gentle nudge. Watch them drift slowly, not falling, just floating.
- Notice there's no 'down' pulling them to the bottom fast, they hover and turn. That's a little like the station.
- Let go of a toy under the water and watch it hang a moment before it moves. On the station, it would just stay, floating.
- Now imagine your whole bedroom like that, every toy and blanket gently adrift, while you sleep in the air.
Science words
- Space station
- A large spacecraft where astronauts live and work while circling the Earth.
- Orbit
- The looping path the station travels around the Earth, once every ninety minutes.
- Floating
- Drifting in the air with no up or down, the way astronauts move in space.
- Sunrise
- The moment the sun appears; the crew sees about sixteen a day.
- Astronaut
- A person who lives and works in space.
Spot it in real life
- Look up when the station passes over at dusk, a bright, steady light gliding across the sky (apps show when).
- Drop a toy and a feather together and watch how things fall, then imagine nothing falling at all.
- Watch bubbles drift up in a drink and picture things drifting in every direction on the station.
- Notice a sunrise or sunset and remember the crew is seeing one about every ninety minutes.
Read this one aloud, slowly
Far above you tonight, someone is asleep in mid-air, held by nothing but a soft bag clipped to the wall, drifting gently as the whole Earth turns below. You don't have to hold on to anything either. Your bed is doing the holding. Breathe in slow… and out… and let yourself grow light and easy, floating down into sleep while the station glides quietly overhead, sunrise after sunrise, all night long.
For ages 7–10
The big idea
The International Space Station orbits about 400 kilometers above Earth, traveling roughly 28,000 kilometers per hour. At that speed it circles the whole planet in about 90 minutes, so its crew sees around sixteen sunrises and sixteen sunsets every day.
Astronauts float not because there's no gravity, but because they're in continuous free fall. The station is falling toward Earth constantly, yet moving sideways so fast that it keeps missing, curving around the planet instead of hitting it. That endless fall is what we feel as weightlessness.
Living there means rethinking everything: sleeping bags are strapped to the wall so no one drifts, water clings in floating spheres, and 'up' is simply whichever way your head happens to point.
Wonder together
- Astronauts are falling the whole time, yet they float. How can falling and floating be the same thing?
- The station keeps 'missing' the Earth as it falls. What would happen if it slowed down?
- The crew sees sixteen sunrises a day. How would your sense of time change without a normal day and night?
- There's no up or down. How much of 'up' do you think is just gravity telling your body which way to point?
- What everyday task, brushing teeth, eating soup, would be hardest to relearn in freefall?
Investigate it
Falling Sideways
You'll need
- A ball
- Open space (outside or a big room)
- A steady arm
What to do
- Drop a ball straight down. Gravity pulls it to the floor, fast.
- Now throw it level, and watch it curve down as it flies, still falling, but moving sideways too.
- Throw it harder and it lands farther away, its fall stretched out by its speed.
- Imagine throwing it so fast that, as it falls, the ground curves away beneath it just as quickly. It would never land, it would orbit. That's the station.
Science words
- Orbit
- A path around a planet, held by continuously falling while moving sideways fast.
- Free fall
- Falling with nothing holding you up; it feels like weightlessness.
- Microgravity
- The near-weightless condition aboard the station, caused by free fall.
- Weightlessness
- The floating sensation of everything falling together at the same rate.
- Low Earth orbit
- The region a few hundred kilometers up where the station circles.
- Solar array
- The wide panels that turn sunlight into the station's electricity.
Spot it in real life
- Use a spot-the-station app to watch it pass overhead, then recall it's falling the whole time.
- Throw a ball flat and hard and watch its curved fall stretch, a slow-motion hint of orbit.
- Swing a bucket of water in a fast circle; the water 'falls' outward and stays in, like orbital motion.
- Track a sunrise, then remember the crew will see their next one in about ninety minutes.
Printable
The Bedtime Scientist · Track & write
Station Tracker
Challenge: Use a free 'spot the station' website or app to find the next time the ISS passes over your home. Write down the date, time, and direction, then go outside and watch for the bright, steady, fast-moving light. Complete the orbit diagram below.
Journal: Astronauts fall endlessly yet feel perfectly held. Write about a time you stopped fighting something and found it held you better than gripping did.
Calm science for curious kids and the grown-ups who love them.
Read this one aloud, slowly
So tonight, picture the station gliding overhead, its crew asleep in mid-air, endlessly falling and never landing, perfectly held by the very motion that looks like floating. Nothing up there is gripping or bracing. It all simply falls together, calm and weightless, around and around. Let your breath do the same: in, slow… out, slower… and let yourself fall gently, held and unhurried, into the deep orbit of sleep.
A Silly Science Story
Sixteen Sunrises
Pick the silliest words you can. The story stays true no matter what you choose: that's the science hiding inside the giggles. Fill in the blanks and watch it come alive.
High above the clouds, a name the an animal floated aboard the space station, where there is no up and no down at all. The station drifts all the way around the Earth in about ninety minutes, so the crew watches the sun rise a big number times a day, once every ninety minutes. Everything floats gently here: a drop of water becomes a a color hovering ball, and a pencil hangs in the air, slowly a silly action (ends in -ing). At bedtime, a name zipped into a sleeping bag clipped softly to the wall and breathed a quiet "a sound," drifting off in mid-air while the a describing word blue Earth turned below, and a warm plate of a food floated by.
Word bank, to fill in by hand:
- a name
- an animal
- a big number
- a color
- a silly action (ends in -ing)
- a sound
- a describing word
- a food
Make it a Family Science Night
Tonight's experiment is even better shared. Turn it into a small event, nothing you don't already have, no pressure, just one other family and a calm hour.
The plan
- Pick a night and invite one other family. Send a text, or hand a child the placemat below to deliver.
- Set out the few things the experiment needs.
- Start the episode together, then try the experiment while it's fresh.
- Let the kids lead. Grown-ups just wonder out loud alongside them.
- End calm: dim the lights and read the bedtime tie-back aloud to everyone.
Scan to listenFamily Science Night
Tonight we're exploring
a day aboard the space station.
Scan the code to listen together, then try tonight's experiment.
The grown-up's 60 seconds
The space station is a place where the ordinary rules quietly dissolve: no up or down, morning arriving sixteen times, a crew asleep in mid-air held by nothing but a clipped bag and trust. It reframes falling not as danger but as the very thing that holds you in orbit. For a grown-up, there's a strange comfort in that, that you can be endlessly falling and perfectly held at the same time, and that the whole thing works precisely because no one is fighting it.
Two small things, if you have a minute
Scan to listen anywhere
And if this one helped, even a little, leave a review, or send it to one friend who's also up past bedtime. That's how a quiet show like this one finds the next tired family.
Listen to the episode.
Pass the calm
Know another tired parent? Pass this along.
One calm bedtime deserves another.
Scan to listen · pod.link/1836539554
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