.CELX File Extension

Celestia Development Team
File Type:
Celestia Script

Having trouble opening .celx extension? Don't panic! This page explains what celx files are as well as suggests programs you may use to open celx files. You can download these programs through this page.

What is a CELX file?

Celx file extension has Celestia Script file type, developed by Celestia Development Team, which is associated with the "executable files" category.

Applied by Celestia, the script file is typically created with the Lua scripting language. It contains instructions regarding the observation angle and location in the universe over time. The file allows putting marks on locations in space. It also enables users to create tours of the universe.

CELX files come in a plain text format. Users can easily edit them via a text editor.

To learn how you can open the given file, read the information below.

celx file icon
Celestia Development Team
File Type:
Celestia Script
Executable Files

How to open CELX file?

Double click the celx file to open it. The file will open automatically if file associations have been correctly installed and there is a proper program on your computer; if not, file associations may be corrupted and your OS either cannot find the proper program, or you might not have one for opening the file. First, we recommend downloading our utility to fix file association errors; then, you can download any program for opening the .celx extension from the ones suggested below. If you are certain there is nothing wrong with the file associations, you may proceed to method 2 right away; besides, if you can't make up your mind when choosing the right program, use Universal File Viewer from the last method.

Method 1: Fix file association errors

Follow these steps in order to automatically fix the celx extension associations' problem in no time:

  • Step 1: Click on "Download Solution" to download automatic tool provided by WikiExt.
  • Step 2: Click "Start Scan" to identify all potential issues.
  • Step 3: Review scan results and click "Fix Items".

File Size: 3.04 MB, Download time: < 1 min. on DSL/ADSL/Cable

This Tool is Compatible With: Windows XP, Vista, 7, 8/8.1, 10

Method 2: Download the appropriate software

The given list provides programs which may be used for opening or converting the celx file. Choose the proper program for your OS, and click it to start the download or proceed to the developer's website.

Programs that open CELX files

  • Windows Windows
    • Celestia Celestia
    • Microsoft Notepad Microsoft Notepad
    • Other text editor Other text editor
  • MacOS MacOS
    • Celestia Celestia
    • Apple TextEdit Apple TextEdit
    • Other text editor Other text editor
  • Linux Linux

Method 3: Use universal file viewer

In addition to the list of programs above, we recommend using Universal File Viewer. This tool can open over 250 file extensions and, most likely, it will be able to open the celx file as well. Download Universal File Viewer for your OS.

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