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Celestia vs SpaceEngine

Celestia

celestiaproject.space

SpaceEngine

spaceengine.org

Side by side

FigureCelestiaSpaceEngine
Price fromFree—
Free planYes—
Free trial——
Open source——
WebYes—
WindowsYesYes
macOSYes—
LinuxYes—
iOSYes—
AndroidYes—
Plans published11
Spec score · Astronomy Apps8.3 (#8)7.2 (#30)
Add-onsCatalogues can be expanded with add-ons containing objects, high-resolution textures, 3D models, spacecraft, and fictional objects.Users can create and import add-ons such as catalogs, models, textures, and spacecraft, and share them through Steam Workshop.
SupportThe original project directs users to its forum or GitHub discussions, while frontend and website feedback can go through in-app feedback, GitHub issues, or email.The maker provides a support and general questions contact form, links to its manual, and invites users to join its Discord server.

Plans

Celestia

  • CelestiaFree

Celestia pricing →

SpaceEngine

  • SpaceEngine$17.99, paid once

SpaceEngine pricing →

In their own words

Celestia

Celestia is free, open-source software for visualizing space in 3D. It simulates objects ranging from planets and moons to star clusters and galaxies, which can be viewed from different positions in space and at different times. Solar system positions and movements are calculated in real time, and users can choose the rate of motion. Celestia also works as a planetarium: users can travel to celestial worlds, land on their surfaces, and see solar system objects in the sky. Add-ons expand the catalogues with objects, high-resolution textures, 3D models, spacecraft, and fictional objects. Celestia is licensed under the GNU General Public License and is available for Android, iOS, Linux, macOS, web, and Windows. The browser option is a lite version. Installation routes differ: Android versions are offered through Google Play, GitHub APK, and alternative markets; Apple versions are on the App Store, with a direct GitHub download for macOS. Windows users can use the Microsoft Store or sideload a GitHub version. The latest stable original-project release for Linux is listed as source code.

Visit celestiaproject.space

SpaceEngine

SpaceEngine has no write-up on Specifiction yet; its figures are above.

Visit spaceengine.org