Enceladus sprays seawater into space. Can we look for signs of life without drilling through the ice?
Follow a grain of ice toward the ocean below.
For you, still awake
Tonight,let go slowly.
Your body is tired, but your mind is still going.
Let a gentle science story give your thoughts a quiet place to land.
When sleep comes, let yourself rest.
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Bedtime science · Quiet companyScroll down, slowly
01 / A little time for yourself
Some nights,
all you need is
a gentle transition.
The lights are off, but today's conversations and tomorrow's plans
are still going around in your head.
Sleepable keeps you company as you move from a busy day toward rest. Let your attention settle on a distant planet, an ocean, or a small everyday question.
While you are awake, enjoy a little discovery. When you feel sleepy, stop whenever you like. There is nothing to finish or memorize.
This time is just for you.
02 / What to listen to tonight
Let your thoughts wander a little further.
From space to the ocean, choose something that makes you curious. Each episode is about 30 minutes; stop wherever you like.
Episode audio is in Chinese; translating this page does not change the audio language.
Why can blue whales grow so much larger than land animals?
Meet a gentle giant beneath the waves.
Europa is frozen outside. Why might a whole ocean lie within?
Imagine another ocean, far away beside Jupiter.
Select a cover to try a real episode. Audio starts only when you press play.
03 / A simple bedtime habit
Start here tonight.
Find your own pace.
- 01
Choose something you are curious about
Planets, nature, everyday life. Follow your interest, without a study plan.
- 02
Let a story keep you company
Set a comfortable volume, settle into a relaxed position, and listen at your own pace.
- 03
When you feel sleepy, stop here
There is no need to finish. Pause the audio and let the day come to a quiet close.
We take sleep seriously,
and our promises, too.
We hope gentle storytelling helps you unwind. Whether it helps you fall asleep faster still needs to be tested. Sleepable offers bedtime content and company, without promising to treat insomnia or claiming that listening while asleep counts as learning.
Our purpose and the research behind it04 / Questions you might have
Start comfortably,
get to know us slowly.
Do I have to keep looking at the screen?
You can listen to the audio samples here without watching the screen. The web app also plays video; whether playback continues in the background or with the screen locked depends on your device and browser.
Do I need to register or sign in?
You can browse and watch without signing in. Signing in with a phone verification code lets you save favorites, viewing history, playback progress, and topic preferences.
Can it treat insomnia?
Sleepable offers bedtime relaxation and science stories. We cannot currently guarantee an improvement in insomnia or a shorter time to fall asleep. Our research notes explain the available evidence and questions still to be tested.
Can it record my sleep?
The product introduction describes an iPhone version that can, with permission, read Apple Watch sleep data from Apple Health. This page links to the web app; its viewing history is not sleep monitoring.
Do I have to finish every episode?
No. Each episode is about 30 minutes. Enjoy something interesting while you are awake, and stop whenever you feel sleepy. There is no task to complete or knowledge to memorize.
You have done enough for today.