Our Solar System is swarming with asteroids and comets. Although astronomers have identified many thousands of these space rocks, new candidates turn up all the time; some small fraction of which might even pose a threat of colliding with Earth.

NASA's Spitzer Space Telescope, in tandem with other major NASA observatories, has recently embarked on a major new mission to glimpse the universe's very first galaxies.

Touring the Milky Way now is as easy as clicking a button with NASA's new zoomable, 360-degree mosaic presented Thursday at the TED 2014 Conference in Vancouver, Canada.

Gigantic magnetic loops on planet-forming disks explain a mystery of too much infrared light.

One of the closest supernovas to go off in the last few decades is putting on a good show for telescopes on the ground and in space.

NASA's Spitzer and Hubble Space Telescopes team up to find a small galaxy that appears to be lying at the observable edge of our universe.

Astronomers using NASA's Hubble and Spitzer Space Telescopes, Europe's Herschel Space Observatory, and many ground-based telescopes have pieced together the evolutionary sequence of compact elliptical galaxies that erupted and burned out early in the history of the universe.

To the surprise of astronomers, most brown dwarfs may be roiled by massive storms.

NASA's Hubble and Spitzer Space Telescopes are providing a new perspective on the remote universe, including new views of young and distant galaxies bursting with stars.

How and when galactic metropolises cease their opulent ways is the subject of new research from NASA's Spitzer Space Telescope.

Since 2010, about 50,000 volunteers have taken to their computers to help astronomers catalog star-blown bubbles captured in images from NASA's Spitzer Space Telescope. Their efforts resulted in several scientific papers, and a deeper understanding of our Milky Way galaxy and its frothy star-forming clouds.

Astronomers using the combined power of the Atacama Large Millimeter/submillimeter Array telescope in Chile and NASA’s Hubble and Spitzer space telescopes have discovered a far-flung trio of primitive galaxies nestled inside an enormous blob of primordial gas nearly 13 billion light-years from Earth.

Supersonic jets burst out of a young star's cocoon in a new image from NASA's Spitzer Space Telescope and the Atacama Large Millimeter/submillimeter Array.

Haunting images from NASA's Spitzer Space Telescope show the disembodied remains of dying stars.

NASA's Hubble, Spitzer and Chandra space telescopes are teaming up to look deeper into the universe than ever before. With a boost from natural "zoom lenses" found in space, they should be able to uncover galaxies that are as much as 100 times fainter than what these three great observatories typically can see.

Astronomers using data from NASA's Kepler and Spitzer space telescopes have created the first cloud map of a planet beyond our solar system, a sizzling, Jupiter-like world known as Kepler-7b.

Even though NASA's Spitzer Space Telescope was never designed to study exoplanets, it has become one of the world's premier telescopes for probing these far-off worlds.

NASA's Spitzer Space Telescope has uncovered secrets of the "asteroid" called Don Quixote, revealing its true comet nature.

Researchers are getting to know some of our sun's closest and smallest neighbors.

Ten years after a Delta II rocket launched NASA's Spitzer Space Telescope, lighting up the night sky over Cape Canaveral, Fla., the fourth of the agency's four Great Observatories continues to illuminate the dark side of the cosmos with its infrared eyes.

Our universe is filled with gobs of galaxies, bound together by gravity into larger families called clusters. Lying at the heart of most clusters is a monster galaxy thought to grow in size by merging with neighboring galaxies, a process astronomers call galactic cannibalism.

A pair of stars peeks out from a tilted disk twirling around them, allowing astronomers to monitor their "blinking" pattern.

Astronomers using NASA's Spitzer Space Telescope have observed what most likely are strong carbon dioxide emissions from Comet ISON ahead of its anticipated pass through the inner solar system later this year.

New views from NASA's Spitzer Space Telescope show blooming stars in our Milky Way galaxy's more barren territories, far from its crowded core.

This galaxy's ring of fire "burns, burns, burns" with young stars.

Astronomers are using NASA's Spitzer Space Telescope to dissect the atmospheres of an exotic class of planets called hot Jupiters.

Stars sparkle in this lively new view of the Small Magellanic Cloud from NASA's Great Observatories.

Two of NASA's great observatories, the Spitzer and Hubble space telescopes, have teamed up to uncover a mysterious infant star that behaves like a strobe light.

Astronomers have discovered what appears to be a large asteroid belt around the star Vega, the second brightest star in northern night skies.

Astronomers using NASA's Spitzer and Hubble space telescopes have probed the stormy atmosphere of a brown dwarf, creating the most detailed "weather map" yet for this class of cool, star-like orbs. The forecast shows wind-driven, planet-sized clouds enshrouding these strange worlds.