Can You Count the Dark Dots?

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An online system to view a detailed sky map with positions and characteristics of space objects.

An interactive sky atlas viewer to visualize digitized astronomical images.

Build detailed views of stellar fields for professional and amateur astronomers.

A fun interplanetary space ship simulator obeys the laws of physics.

Provides many visual effects, including the Milky Way, twinkling stars, shooting stars, clouds and light pollution.

A space travel simulator lets you travel throughout the solar system even beyond the galaxy.

A fun and gamified language learning tool lets you practice speaking, reading, listening and writing.

An excellent open-source program enables you to draw sky charts.

A good typing tutor for intermediate learners who want to improve their typing in a new and interesting way.

Excels at locating artificial satellites, comets and asteroids with 256,000 stars in its catalog.

A resourceful website and app to give answers to your questions and enrich your knowledge

The best typing program for users who already have some basic typing skills.

An ideal typing tutor for absolute beginners with a large amount of typing instructions and practices.

A rich visualization environment functions as a virtual telescope to enable explorations of the universe.