Composite image shows solar-type stars under Small Magellanic Cloud wing.
Image from Hubble Space Telescope shows close encounters between galaxies.
Chandra X-ray data shows a hot gas cloud caused by colliding galaxies.
Artist's concept depicts Voyager 1 entering the interstellar medium.
Composite image of the giant barred spiral galaxy NGC 6872.
Andromeda galaxy as observed by the Hubble Space Telescope.
Diagrams show super-Earth-size planets discovered by Kepler.
Planck space telescope image of the oldest light in the universe.
Image of Milky Way made with data from the 2MASS project.