Using data from NASA's Kepler and Spitzer Space Telescopes, scientists have made the most precise measurement ever of the size of a world outside our solar system, as illustrated in this artist's conception.
A composite image of the spiral galaxy NGC 4258 showing X-ray emission observed with NASA's Chandra X-ray Observatory (blue) and infrared emission observed with NASA's Spitzer Space Telescope (red and green).
This infrared image from NASA's Spitzer Space Telescope shows N103B -- all that remains from a supernova that exploded a millennium ago in the Large Magellanic Cloud, a satellite galaxy 160,000 light-years away from our own Milky Way.
Studied by astronomers, Serpens Cloud Core is one of the youngest collections of stars ever seen in our galaxy. This infrared image combines data from NASA's Spitzer with shorter-wavelength observations from the Two Micron All Sky Survey.
Astronomers have found cosmic clumps so dark, dense and dusty that they throw the deepest shadows ever recorded. A large cloud looms in the center of this image of the galactic plane from NASA's Spitzer Space Telescope.
This composite image shows one of the clusters, NGC 2024, which is found in the center of the so-called Flame Nebula about 1,400 light years from Earth. Astronomers have studied two star clusters using NASA's Chandra and infrared telescopes.
This frame from an animation shows the coldest brown dwarf yet seen, and the fourth closest system to our sun. Called WISE J085510.83-071442.5, this dim object was discovered through its rapid motion across the sky.
The galaxy NGC 4395 is shown here in infrared light, captured by NASA's Spitzer Space Telescope. This dwarf galaxy is relatively small in comparison with our Milky Way galaxy, which is nearly 1,000 times more massive.
This mosaic reveals a panorama of the Milky Way from NASA's Spitzer Space Telescope. This picture covers only about three percent of the sky, but includes more than half of the galaxy's stars and the majority of its star formation activity.
The closest supernova of its kind to be observed in the last few decades, M82 or the 'Cigar galaxy,' has sparked a global observing campaign involving legions of instruments on the ground and in space, including NASA's Spitzer Space Telescope.
This image of the galaxy cluster Abell 2744 was obtained with NASA's Hubble Space Telescope. The zoomed image shows the region around the galaxy Abell2744_Y1, one of the most distant galaxy candidates known.
This long-exposure image from NASA's Hubble Space Telescope of massive galaxy cluster Abell 2744 is the deepest ever made of any cluster of galaxies. Shown in the foreground is Abell 2744, located in the constellation Sculptor.
The view is a composite of images taken in visible and near-infrared light by NASA's Hubble Space Telescope. Researchers have circled four unusually red objects that appear as they existed just 500 million years after the big bang.
The collection of red dots seen here show one of several very distant galaxy clusters discovered by combining ground-based optical data from the NOAO's Kitt Peak National Observatory with infrared data from NASA's Spitzer Space Telescope.
Combined observations from NASA's Spitzer Space Telescope and the newly completed Atacama Large Millimetre/submillimeter Array (ALMA) in Chile have revealed the throes of stellar birth in the well-studied object known as HH 46/47.