Astrophysics I is the first of a series of three educative applications in astronomy. This first part covers the solar system.
More than 90 screens of astronomy on the solar system !
More than 40 animations to explain astrophysics, most in 3D.

For teachers !! Connect your iPad to a video projector and show the animations to your students in classroom.

List of topics:

- Reminder of mathematics,
- Reminder of mechanical,
- Coordinate Systems,
- Time measurement.

- Gravity,
- The orbits,
- The orbit elements,
- Kepler's laws,
- The Lagrangian points.

The Solar System
- Earth,
- The Earth-Moon system,
- The Earth's atmosphere,
- Atmospheres,
- Distance Scale,
- Models of Solar Systems,
- Asteroids,
- Comets,
- The planets.

- Physical constants,
- Astronomical constants.

- Books,
- Websites.

What's New

Version 3.7

Bugs corrections.

Ratings and Reviews

4.0 out of 5
5 Ratings
5 Ratings



This app is fantastic, maybe one of the best I own. I am a grad student in aerospace engineering and it has a lot of information for quick reminders and/or learning new stuff. The usefulness as a quick reference aside the animations and examples are fabulous. I would only suggest going though and finding the language errors. No glaring errors just a few terms that haven't gotten an alternate English term. Otherwise the amount of work put into this is exceedingly evident and I must give credit where credit is due. I own several of this developers apps and all are great. Keep it up and I look forward to more.

A useful compendium


This app is a useful compendium on orbital mechanics & solar system data. Residual French & typos & syntax need to be cleaned up in the English version. Many of the animations are unique and very useful; some are not or do not operate smoothly (Solar System esp.). They would be especially useful for class use if VGA output were enabled in the app for iPad1.

I look forward to the next version, and Parts 2 & 3.

Astrophysics apps


I am a science student at university, and I bought the set of these astrophysics apps and they do not work. I paid nearly 10 dollars for the both of them, and I can't do anything. I don't have a lot of money and I got this in return. The apps crash like crazy, particularly astrophysics II. I've never written a bad review in my life, until now. I'd love a refund for a complete waste of my money.


Xavier Daxhelet
153.9 MB
Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, French
Age Rating
Rated 4+
© Xavier Daxhelet


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