WorldWide Telescope (WWT) is a computer program created by Microsoft. Users are able to pan around outer space and zoom as far into any one area as the data will allow. Images are taken from the Hubble Space Telescope and approximately ten earth-bound telescopes. It is possible to view the sky in many wavelengths of light.
The WorldWide Telescope allows the selection of a telescope and camera and can preview the field of view against the sky. Using ASCOM the user can connect a computer-controlled telescope or an astronomical pointing device such as Meade's MySky, and then either control or follow it. The large selection of catalog objects and 1 arc-second-per-pixel imagery allow an astrophotographer to select and plan a photograph and find a suitable guide star using the multi-chip FOV indicator.
- Sky. It allows users to view high quality images of outer space with images from many space and Earth-based telescopes. Each image is shown at its actual position in the sky. There are over 50 full-sky images in spectral bands ranging from radio to gamma. Sky mode also shows the Sun, Moon, planets, and their moons in their current positions.
- Earth. Earth mode allows users to view a 3D model of the Earth, similar to NASA World Wind, Microsoft Virtual Earth and Google Earth. It uses Virtual Earth's satellite and map images, but is not powered by VE.
- Planets. Planets mode currently allows users to view 3D models of eight celestial bodies: Venus, Mars, Jupiter, four of Jupiter's larger moons, and our own planet's Moon. It also allows users to view a Mandelbrot set.
- Panoramas. The Panorama mode allows users to view several Mars Rover panoramas, two panoramas inside building 99, and other gigapixel panoramas such as the ones available for HDView.
- SolarSystem. This mode displays the major solar system objects from the Sun to Pluto, and Jupiter's moons, all positioned with their correct scale, position and phase. The user can move forward and backward in time at various rates, or type in a time and date for which to view the positions of the planets, and can select viewing location. In this mode it is possible to zoom away from the Solar System, through the Milky Way, and out into the cosmos to see a hypothetical view of the entire known universe.
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