The Interactive Link Directory
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  • Has each day a different image of our universe, with an explanation by a professional astronomer.
  • See the position of over 900 satellites.
  • View a map of earth showing day and night regions, view positions of planets, satellites, etc.
  • Draw sky charts (16 catalogs of stars and nebulae, position of planets, asteroids and comets)
  • Free real-time space simulation that lets you explore our universe in three dimensions
  • 3001 questions about space, the Moon, the solar system, the cosmos, and more.
  • Renders realistic skies in real time.
  • Moon.Google takes you there. Virgin Galactic lets you see the stars during the day.
  • Take a trip to space in a real spaceship ($200,000).