Best Celestia Alternatives in 2025

Looking for alternatives to Celestia? In this comparison, we take a closer look at Celestia alongside similar software solutions including Celestia and Stellarium.

Our detailed comparison table highlights key features, pricing, and performance of these leading solutions, empowering you to make an informed decision. Whether you're seeking robust functionality, user-friendly design, or cost-effective alternatives, explore how Celestia and Stellarium stack up to find the perfect software for your goals.

	Software Type	User Interface and Usability	Operating System Support	Features and Capabilities	Community and Support
Celestia	Open-source 3D space simulation software	User-friendly graphical interface with a steep learning curve and complex controls	Supports Windows, Linux, and macOS	High accuracy interactive 3D space simulation with customizable viewing options, add-ons, supports celestial bodies including asteroids, comets, star clusters, planets, spacecraft	Has user-created content and add-ons, limited specific mentions of community forums
Stellarium	Free open-source planetarium software	User-friendly interface suitable for beginners and advanced users with many settings	Supports Windows, Linux, and macOS	Realistic sky map with detailed celestial objects and constellations, customizable viewing options including date and location, supports naked eye and advanced astronomical phenomena	Has an active community forum, extensive documentation, Help menu, and social media groups

Software Type

Celestia	Open-source 3D space simulation software
Stellarium	Free open-source planetarium software

User Interface and Usability

Celestia	User-friendly graphical interface with a steep learning curve and complex controls
Stellarium	User-friendly interface suitable for beginners and advanced users with many settings

Operating System Support

Celestia	Supports Windows, Linux, and macOS
Stellarium	Supports Windows, Linux, and macOS

Features and Capabilities

Celestia	High accuracy interactive 3D space simulation with customizable viewing options, add-ons, supports celestial bodies including asteroids, comets, star clusters, planets, spacecraft
Stellarium	Realistic sky map with detailed celestial objects and constellations, customizable viewing options including date and location, supports naked eye and advanced astronomical phenomena

Community and Support

Celestia	Has user-created content and add-ons, limited specific mentions of community forums
Stellarium	Has an active community forum, extensive documentation, Help menu, and social media groups

Choosing the right software isn’t just about features. Size, license type, user ratings, and popularity also matter.

This quick comparison shows how Celestia stacks up against Celestia and Stellarium in these key areas—helping you find the best alternative for your needs.

	Size	License	Rating	Popularity
Celestia		Open Source		0%
Stellarium	358MB	Open Source		100%

Size

Celestia
Stellarium	358MB

License

Celestia	Open Source
Stellarium	Open Source

Rating

Celestia
Stellarium

Popularity

Celestia	0%
Stellarium	100%