A 3-minute daily space game
Hoshira
Discover the universe, one choice at a time.
Two real objects. One question: bigger, hotter, farther, or discovered first? Swipe your answer, then see them to scale with a surprising fact and where it came from.
Not out yet. Store links will appear here at launch.
How it works
Three minutes, no sign-up, no pressure.
Compare
Two real space objects appear. Which one is bigger, hotter, farther, or was discovered earlier?
Swipe
Swipe toward your answer. Trust your gut; there is no timer on your curiosity.
See the scale
The reveal shows both objects to scale, plus a surprising fact with its source.
Play it your way
Daily Challenge
The same 10 questions for everyone, every day. Share your emoji grid like Wordle.
Endless
Keep going until you miss. How far can your instincts take you?
Cosmic Atlas
Every object you meet is collected in your Atlas.
Sky
See which eclipses and meteor showers are coming up, and set a reminder.
The Cosmic Atlas
A collection of 116 real objects that fills up as you play. Each entry carries its facts and where they come from.
- Planets
- Moons
- Stars
- Exoplanets
- Nebulae
- Galaxies
- Black holes
Facts are drawn from NASA, ESA, JPL and the NASA Exoplanet Archive, and cited in the app.
Up in the sky
Upcoming eclipses and meteor showers, with what happens, where to see them and how to watch safely. Set a reminder and Hoshira tells you the evening before.
- Geminids meteor showerWorldwide
- Quadrantids meteor showerBest from the Northern Hemisphere
- Annular solar eclipseRing visible from Chile and Argentina
- Lyrids meteor showerWorldwide
- Eta Aquariids meteor showerWorldwide
- Total solar eclipseMorocco, Spain, Algeria, Libya, Egypt, Saudi Arabia, Yemen and Somalia
- Perseids meteor showerWorldwide
- Orionids meteor showerWorldwide
- Annular solar eclipseEcuador, Peru, Brazil, Suriname, Spain and Portugal
Dates are peak or greatest-eclipse dates; meteor shower peaks shift by about a day each year. Eclipse data from NASA; meteor showers from the International Meteor Organization.
Eclipse safety: look at the Sun only through certified eclipse glasses (ISO 12312-2), never sunglasses, and never binoculars or a telescope without a proper solar filter.
Questions
Is Hoshira free?
Yes, Hoshira is free to download.
Do I need an account?
No. There is no sign-up. Your progress stays on your device.
How long does a game take?
About three minutes. The Daily Challenge is 10 questions.
Is it only in English?
Hoshira is available in English and Spanish.
Where do the facts come from?
From NASA, ESA, JPL and the NASA Exoplanet Archive. Each fact shows its source.
Will it remind me to play?
Only if you turn on the optional daily reminder, or set a reminder for a sky event. Reminders are off by default.
When can I get it?
Soon. The App Store and Google Play badges above will turn into real links at launch.