Opening the iTunes Store.If iTunes doesn't open, click the iTunes application icon in your Dock or on your Windows desktop.Progress Indicator
Opening the iBooks Store.If iBooks doesn't open, click the iBooks app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To buy and download SETI Sync Problem by SETI Institute, get iTunes now.

Already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download
iTunes for Mac + PC

SETI Sync Problem

By SETI Institute

Open iTunes to buy and download apps.


The Search for Extraterrestrial Intelligence has been in existence for about 50 years, and has found practically nothing of interest. Given the huge number of about 200 billion stars in our galaxy, why have we not seen any verified evidence of extraterrestrial intelligence? As Enrico Fermi famously asked in the 1940s, "Where is everybody?"

In the vast time and space expanse of our galaxy, stars, their planetary systems and any potential for intelligent life come and go like fireflies on a warm summer’s night. SETI synchronicity Problem is an accurate interactive visual simulation of the synchronicity problem that exists when intelligent civilizations try to detect one another. This application will stretch your mind to the incredible reality of our galaxy and will give you a new perspective of the immensity of the cosmos.

App created by Roger Guay for SETI Institute

SETIsyncProb Website:

email -


• Set the maximum range that radio waves can be detected above background radiation from 5,000 to 50,000 light years
• Set the lifespan of the radio age of intelligent civilizations from 200 to 2000 years or select a random lifespan between 200 to 2000 years, for each transmit and receive times
• Select the number N of radio worlds created when taking a snapshot
• Generate a snapshot of N radio worlds randomly distributed in time and space


iPad with iOS 5 or later


This app provides access to a Mac version at no additional cost.

What's New in Version 2.0

Included independent transmit and listen times for lifespan L
Added N selection
Added weighted random distribution favoring center of galaxy
Added magnifying glass
Added background intensity adjustment
Added Auto Control Panel Slider toggle
Added hide/show of instructions
Added Auto Repeat function in Tutorial
Added Web links to further information
Improved navigation
Improved tapping of rings - information persists until next tap
Improved overall performance

iPad Screenshots

iPad Screenshot 1
iPad Screenshot 2
iPad Screenshot 3
iPad Screenshot 4
iPad Screenshot 5
SETI Sync Problem
View In iTunes
  • $0.99
  • Category: Education
  • Updated:
  • Version: 2.0
  • Size: 20.2 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 5.0 or later. Compatible with iPad.

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.
All Versions:

More iPad Apps by SETI Institute