The huge instrument is making good progress toward a planned 2018 launch, NASA officials say.
Stars are giant, luminous spheres of plasma. Galaxies consist of stars, stellar remnants, dust, gas, and dark matter, bound together by gravity. Learn more about stars and galaxies.
This composite space wallpaper shows the jet from a black hole at the center of a galaxy striking the edge of another galaxy.
Baby planets pull gas and dust toward their parent star, helping young suns to continue in their evolution.
This unique space wallpaper shows AB7, one of the highest excitation nebulae in the Magellanic Clouds (MCs), two satellite galaxies of our own Milky Way.
This space wallpaper shows an artist’s impression of the supergiant star Betelgeuse as it was revealed thanks to different state-of-the-art techniques on ESO’s Very Large Telescope (VLT).
A galaxy that may be farther than any previously seen is shedding light on the earliest years of the universe.
Scientists will report on a population of primitive galaxies that formed more than 13 billion years ago.
This space wallpaper shows a three-colour image of SCR1845-6357AB generated from the SDI filter images (blue=1.575 micron, green=1.600 micron, red=1.625 micron).