First Stars or Stray Stars? A Cosmic Infrared Mystery
Our sky is filled with a diffuse background glow, known as the cosmic infrared background. Much of the light is from galaxies we know about, but previous Spitzer measurements have shown an extra component of unknown origin.
Seeing Starlight Through a Planet's Rim (Artist's Concept)
A Neptune-size planet with a clear atmosphere is shown crossing in front of its star in this artist's depiction. Such crossings, or transits, are observed by telescopes like NASA's Hubble and Spitzer to glean information about planets' atmospheres.
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.
Taken Under the 'Wing' of the Small Magellanic Cloud
The tip of the 'wing' of the Small Magellanic Cloud galaxy is dazzling in this new view from NASA's Great Observatories. The SMC, is a small galaxy about 200,000 light-years way that orbits our own Milky Way spiral galaxy.
Anatomy of Brown Dwarf's Atmosphere (Artist Concept)
This artist's illustration shows the atmosphere of a brown dwarf called 2MASSJ22282889-431026, which was observed simultaneously by NASA's Spitzer and Hubble space telescopes. The results were unexpected, revealing offset layers of material.
The spiral galaxy NGC 3627, located about 30 million light years from Earth as seen by four NASA telescopes; inset shows the central region, which contains a bright X-ray source that is likely powered by material falling onto a supermassive black hole.