From site: Want to see the same images that scientists at NASA use for their research or perform your own research with those images? Or do you want to see the Earth from the same perspective that astronauts see as they descend to Earth? How about taking a 5 minute break and viewing a panorama of a different city? Install WWT and start your explorations…
Choose from a growing number of guided tours of the sky by astronomers and educators from some of the most famous observatories and planetariums in the country. Feel free at any time to pause the tour, explore on your own (with multiple information sources for objects at your fingertips), and rejoin the tour where you left off. Join Harvard Astronomer Alyssa Goodman on a journey showing how dust in the Milky Way Galaxy condenses into stars and planets. Take a tour with University of Chicago Cosmologist Mike Gladders two billion years into the past to see a gravitational lens bending the light from galaxies allowing you to see billions more years into the past.