Most searches for planets around other stars, also known as exoplanets, focus on sun-like stars.
The most earthlike planet yet found around another star may be the rocky remains of a Saturn-sized gas giant.
Radio astronomers have uncovered 17 millisecond pulsars in our galaxy that could be used as a kind of "galactic GPS" to detect gravitational waves passing near Earth.
All together, NASA's Science Mission Directorate supports over 60 operating space missions. These missions are of great value to the nation and help us meet national needs in science, education, and technological innovation.› View PDF (23 Kb)
A supermassive black hole at the center of the Milky Way galaxy has a poor appetite for consuming matter.
NASA's Spitzer Space Telescope has captured an action-packed picture of the nearby Small Magellanic Cloud, a small galaxy that looks like a wispy cloud when seen from Earth.
More than 12 billion years of cosmic history are shown in this unprecedented view of thousands of galaxies in various stages of assembly.
NASA's Hubble Space Telescope has broken the distance limit for galaxies and uncovered a primordial population of compact and ultra-blue galaxies that have never been seen before.
For almost two centuries, humans have looked up at a bright star called Epsilon Aurigae and watched with their own eyes as it seemed to disappear into the night sky, slowly fading before coming back to life again.
Scientists attempting to unlock the mysteries of the sun's corona, its outer atmosphere, have found another piece of the puzzle with the help of observations made during eclipses.
The Kepler space telescope, designed to find Earth-size planets in the habitable zone of sun-like stars, has discovered its first five new exoplanets, or planets beyond our solar system.
New results from Chandra suggest that a stellar remnant has been ripped apart by a massive black hole.