Strictly speaking, it's open source software, but it's hard to believe that you can do so much with free software. Compatible with Windows, Mac OS X, and Linux. It is characterized by its wonderful ...

Created by Fabien Chereau and his brother, Stellarium is a simple yet sophisticated online planetarium based on an open source project. The planetarium is accessed with little or no instruction; it is ...

On astronomical telescopes of even middling power, a small “finderscope” is often mounted in parallel to the main optics to assist in getting the larger instrument on target. The low magnification of ...

Stellarium Web lets you explore over 60,000 stars, locate planets, and watch sunrises and solar eclipses. If you enter your location, you can see all the constellations that are visible in the night ...

There are thousands of stars visible to the naked eye in the night sky. Unfortunately, the sky isn’t that dark in cities where light pollution obscures the beauty of the universe. But one doesn’t need ...

The summer solstice takes place on 21 June this year and according to Stellarium charts, Mars, Venus and the moon will be visible in London as they head towards the western horizon. Signalling the ...

Stellarium Web lets you explore over 60,000 stars, locate planets, and watch sunrises and solar eclipses. If you enter your location, you can see all the constellations that are visible in the night ...