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ClearDarkSky provides detailed sky charts and weather forecasts to help astronomers and stargazers plan the best nights for observing the sky.

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Explore the night sky with Stellarium Mobile Plus, an app that lets you view stars, planets, and constellations with realistic sky simulations and maps.

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Explore stars, planets, and constellations with Redshift. Use apps or PC software to discover the night sky and learn about astronomy in an interactive way.

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Explore the night sky with interactive star maps, real-time data on planets and comets, and guides for astronomy enthusiasts of all levels.

Worldwide Astrosysteme.com Alternatives

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Easily find which constellation contains any sky coordinates with this astronomy tool designed for quick star mapping and constellation identification.

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MeMstar® helps you easily locate celestial objects with a pointing device, making stargazing and astronomy more accessible for everyone.

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Explore the night sky with an interactive star map and astronomy tool that helps you identify stars, planets, and constellations in real time.

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Explore asteroid data and plan observations using modern tools from Lowell Observatory, featuring search, analysis, and discovery across multiple surveys.

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Provides astronomical calculations, such as ephemeris data and event predictions, for researchers and enthusiasts. Japanese language site.

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Explore astronomy news, telescopes, science, and meteorology at the Observatorio de Sierra Nevada site.

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Explore the universe with NASA's SkyView, a virtual observatory that lets you generate images of any part of the sky across multiple wavelengths.

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Download astronomy software source codes and tools for ephemeris calculations, star catalogues, and orbital position data, with C language support.

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Explore asteroid discoveries and data with NEOWISE, a project dedicated to finding, tracking, and studying asteroids in our solar system.

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CelesTrak offers up-to-date satellite tracking data, tools, and resources for anyone interested in monitoring objects in Earth orbit.

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