• If you run Mac OS X or don't meet these requirements try the Web Client
  • Microsoft® XP SP2 (minimum), Windows® Vista® (recommended)
  • PC with Intel Core 2 Duo processor with 2 gigahertz (GHz) or faster, recommended
  • 1 gigabyte (GB) of RAM; 2 GB RAM recommended
  • 3D accelerated card with 128 megabytes (MB) RAM; discrete graphics card with dedicated 256-MB VRAM recommended for higher performance
  • 1 GB of available hard disk space; 10 GB recommended for off-line features and higher performance browsing
  • XGA (1024 x 768) or higher resolution monitor
  • Microsoft Mouse or compatible pointing and scrolling device
  • Microsoft® DirectX® version 9.0c and .NET Framework 2.0
  • Required for some features; Internet connection at 56 Kbps or higher through either an Internet service provider (ISP) or a network. Internet access might require a separate fee to an ISP; local or long-distance telephone charges might also apply
Microsoft Research WorldWide Telescope
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Experience
WorldWide Telescope
Immerse yourself in a seamless beautiful environment.
WorldWide Telescope (WWT) enables your computer to function as a virtual telescope, bringing together imagery from the best ground and space-based telescopes in the world. Experience narrated guided tours from astronomers and educators featuring interesting places in the sky.
A web-based version of WorldWide Telescope is also now available. This version enables seamless, guided explorations of the universe from within a web browser on PC and Intel Mac OS X by using the power of Microsoft Silverlight 3.0.
Install WorldWide Telescope
Windows® System Requirements
(For Mac OS X use the Web Client) 

Mac & PC - Compare Client Versions
WorldWide Telescope Ambassadors Program
Galileo's New Order is the first of a new range of tours for WorldWide Telescope created under the Ambassadors Program - a program designed to teach astronomy experts how to create WWT tours as teaching aids. This tour shows how Galileo's careful observations of Jupiter's moons led him to believe correctly that mathematician Copernicus got it right – the planets orbit the Sun, not the Earth. The tour required the 3d Windows Client and is also available in the Planets section tours tab.
 
What is WorldWide Telescope?
What is WorldWide Telescope?
WWT is an application that runs in Windows that utilizes images and data stored on remote servers enabling you to explore some of the highest resolution imagery of the universe available in multiple wavelengths.
Learn more about WorldWide Telescope now
 
Take a Tour
Take a Tour
Watch and see what you are missing. You can see videos of the guided tours within WorldWide Telescope or if you have WWT already installed, you can download a tour and interactively explore what you see.
See the WorldWide Telescope tours now
 
Share the Experience
Share the Experience
Why keep the seamless exploration of the universe WorldWide Telescope can provide a secret? Tell your friends and family!
Share WorldWide Telescope Now
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