# Astrophysics I

> Reference

Canonical page: [https://chrome-stats.com/d/id449455262](https://chrome-stats.com/d/id449455262)

## Overview

- **ID:** `id449455262`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Xavier Daxhelet
- **Category:** Reference
- **Rating:** 4.40 / 5 (9 ratings)
- **Version:** 5.1
- **Last updated:** 2026-04-28
- **First published:** 2011-07-27
- **Size:** 249 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/astrophysics-i/id449455262)
- **Website:** [http://www.kromasoft.com](http://www.kromasoft.com/)
- **Privacy policy:** [https://storage.googleapis.com/privacypolicie/PrivacyPolicies.html](https://storage.googleapis.com/privacypolicie/PrivacyPolicies.html)

## Description

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:

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

Gravity
- 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.

Constants
- Physical constants,
- Astronomical constants.

References
- Books,
- Websites.

## Rankings

- #354,586 — Overall

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