View fascinating simulations of the solar system, NASA video clips, 3-D animation, and hundreds of images. Unravel the mysteries of the universe, galaxies, nebulae, stars, constellations, and the solar system like never before. Rich and Dynamic Multimedia Explore photographs, sounds, animated sequences, and videos about the universe, the bodies in it, tools used in studying them, and the highlights of astronomical research past and present. Learn about the universe that surrounds you.