What is astronomy (space/constellation/planetarium) software?
Planetarium software allows you to view the stars and constellations that spread across the universe on your computer. Its
unique feature is that you can view the universe regardless of the weather or time of day; whether you want to look up at the stars in the night sky but can't see them because it's cloudy, you want to see the stars during the day, or you want to know where and which constellations appear depending on the season.
There is also software that allows you to specify the date and time and observe the position of the stars at your preferred time of day, and you can also experience the mysteries of the universe through solar and lunar eclipses.
unique feature is that you can view the universe regardless of the weather or time of day; whether you want to look up at the stars in the night sky but can't see them because it's cloudy, you want to see the stars during the day, or you want to know where and which constellations appear depending on the season.
There is also software that allows you to specify the date and time and observe the position of the stars at your preferred time of day, and you can also experience the mysteries of the universe through solar and lunar eclipses.
Free astronomy (space/constellation/planetarium) software
- Compatible OS: Windows 95/98/Me/2000/XP/Vista/7Version: 3.7.2 (2021/04/14)Provided by: Tsuruchan
- Compatible OS: Windows XP/Vista/7/8/8.1/10/11Version: 1.7.4a (2023/03/24)Provided by: National Astronomical Observatory of Japan 4D Digital Universe Project
- Compatible OS: Windows XP/Vista/7/8/8.1/10/11Version: 3.02 (2010/02/05)Provided by: Tox Information System
- Supported OS: Windows, Mac, LinuxVersion: 1.6.4 (2023/11/05)Provided by: Celestia Development Team
- Supported OS: Windows 7 or later, macOS 11.0 or later, LinuxVersion: 25.1 (2025/03/23)Provided by: Stellarium Developers
- Supported OS: Windows, Mac, Linux, iOS, AndroidProvided by: Google Inc.
- Compatible OS: Windows XP/Vista/7/8/8.1/10Version: 1.1 (2015/04/25)Provided by: Nagatsuki
- Supported OS: Windows 7/8/8.1/10Version: 6.1.2.0 (2022/07/12)Provided by: Microsoft Corporation.* The client software is only available for Windows, but the web version that can be used in can also be used on Mac/Linux.
* Recommended PC requirements include an Intel Core 2 Duo 2GB or higher, 1GB or more of free space (10GB recommended), and 8GB or more of memory. - Compatible OS: Windows 98/Me/NT/2000/XP/VistaVersion: 2.0 (2009/05/05)Provided by: Toshiya Kaga
- Supported OS: Windows 2000/XP/Vista/7Version: 1.61 (2009/10/01)Provided by: JTCS-SOFT









