One-Light-Day
Celebrating Voyager 1
$0.99 · Designed for iPad. Not verified for macOS.
One light-day, at your fingertips. Pinch, zoom, and scroll from everyday scales to the planets and beyond, all the way to Voyager 1.
One Light-Day is an app created to commemorate Voyager 1’s passage of the “one light-day point” from Earth.
But just how long is a “light-day,” anyway?
In this app, a variety of objects—from familiar things on Earth to the Moon, the planets, the edge of the solar system, and even Voyager 1—are arranged according to a single scale.
You can zoom in or out wherever you like. Of course, you’re also welcome to just scroll through it.
Space is filled with an astonishing amount of empty space.
“Aren’t we there yet?”
“Just how far does it go?”
Experiencing that vastness for yourself is one of the joys of this app.
The purpose of this app isn’t to recreate space exactly as it is.
It’s about feeling its vastness and distance in a way that’s a little different from usual.
There isn’t just one “correct scale” for viewing the universe.
Zoom in.
Zoom out.
Scroll.
One light-day, right in your palm.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Hiroe Oshimura, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Hiroe Oshimura
- Size
- 20.5 MB
- Category
- Education
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © none
