Chromoscope lets you explore our Galaxy (the Milky Way) and the distant Universe in a range of wavelengths from gamma-rays to the longest radio waves.
Stars
An interactive 3D visualization of the stellar neighborhood, including over 100000 nearby stars.
Night Sky Panorama of the Bonneville Salt Flats
An amazing panorama of the Bonneville Salt Flats at Night with a link to view them at dusk as well.