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International Space Station allows to see the position of the the International Space Station over an interactive map of the world or an interactive tridimensional representation fo the world. With a simple view you will be able to see if the International Space station will be visible from your local position in the next hours (naked eye). Using the application (in the previous release) I did it many time and success is granted and also the 'Wow effect' from the one you show it in the sky. Many people has no idea the space station can be seen naked eye (if you know when to look and where)

With a simple click you can also see the live webcam stream coming from the International Space Station. You will watch the astronauts activities with video and audio, all live.

Calculation of the position of the station is very accurate, the app uses the latest NASA code optimized for Mac to calculate it. You don't get an approximated position, you get the exact position, speed and altitude of the Station updated any 3 second. The route path is visualized over the map to evaluate if the station is coming near your position in the next hours (when meteorological and light condition are adequate you can see it without any instruments, just observing the sky naked-eye). Time of day matters, you can see it during the day but only when you have dark sky and the station still get the sun light, so usually after sunset for around 3 hours and before down (for a period of 3 hours) Every year during the summer I had the possibility to see it many times in a month and many nights you have 2 valid passages (distanced by the time it spend for a world circle with is around 90 minutes at 27 000 Km/h - 17 000 MPH)

You can zoom, move and resize the map as you like at any time and on the map you see exactly from where it's coming and where to look to catch it After some time you will become expert to spot it in the sky as soon as it is on the horizon.

The application downloads at regular time, once per day when you startup it, from our server, the latest orbital parameters to calculate the orbit, so the calculation obtained for the position is always accurate and perfect because the app uses the most updated orbital parameters. No user action required, the app does it all alone. Our own server provides always updated NASA data to your app when it requires it.

International Space Station is easy and fun to use, anyone can use it even if it uses sophisticated satellite orbit calculation with the same alghoritm used by pro orbital calculation software.

We have also a modern just released version for iOS for your iPhone and iPad, look on the iOS App Store for iSS Track 2

Requires macOS 10.11 or successive

  • Perfect results as using pro orbital software but in an easy to use app
  • Offers 6 different kind of map/3D globe on macOS 10.13 (5 on previous release, plain map not available till 10.12)
  • Customizable latitude/longitude format
  • Measure units in Km and Km/h or NM and MPH
  • Zoomable interactive Map and 3DGlobe showing also night/day areas
  • 'Keep Centered' function
  • Circle area of visibility moving with the station
  • Autodetect of your position and circle area of visibility around your position
  • Includes a PDF User Guide

Plus it offers fast access via your web browser to various dedicated area:

  • Page Station at NASA
  • Nasa station blog
  • Web Cam stream on board of the station
  • Audio stream from the station
  • Facebook page of the station
  • Twitter NASA astronauts
  • Twitter ESA astronauts
  • YouTube presence
  • Flickr presence
Connection with:
Page Station at NASA
Facebook page of the station
Twitter presence
YouTube presence
Flickr presence
Zoomable Map, ‘Keep Centered’ function
Measure units in Km and Km/h or NM and MPH Customizable latitude/longitude format
Perfect results as using pro orbital software but in an easy to use app. You get exact position to predict when the ISS will be over you and you see always the 'distance visibility circle' around the station Web Cam stream on board of the station
Audio stream from the station
Can select up to 12 h of future orbit track Native Intel 64 bit to take full advantage of the power of the latest Macs
We develop for Mac from a long time. We use only Apple native technology to create macOS apps because we love the Mac and and we love pure true macOS apps Sandboxed and Gatekeeper signed respecting all the Apple rules for first class macOS apps
Includes a full User Guide in PDF accessible under the Help Menu inside the application. Optimized for macOS 10.13 (High Sierra)

Requires an internet connection for Apple Map visualization, data update once a day, web cam stream and web pages access. Position is calculated locally using the latest algorithm for orbit computation coded for macOS

Want to know more about International Space Station?
Read the full International Space Station Online User Guide in another window.
For general questions about our product, visit our Tension Software Generic OS X FAQ.
You may also read what's new in each version by going to International Space Station Releases.
Do you know that International Space Station is available also for your iPhone or iPad ? (using all the screen in full format) Look HERE for it
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International Space Station

Shows actual precise position over a map

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Tension Software

International Space Station

Route are calculated with latest data by NASA

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Tension Software

International Space Station

Map is zoomable

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Tension Software

International Space Station

The International Space Station is visible at naked eye from the earth!

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Tension Software

International Space Station

Up to 12 hours of next trajectory visible

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Tension Software