Celestia/Development/Linux platform

Getting source from git
Use your favorite git client program to download Celestia from GitHub. If you're using the command line git client, use the following command line to update your local Celestia development directory: git clone https://github.com/CelestiaProject/Celestia.git

The target directory is Celestia

Basic installation steps
First, change directory with "cd Celestia" and follow the instructions on page https://github.com/CelestiaProject/Celestia/blob/master/INSTALL.md