There's a going theory out there that an undiscovered planet resides in our solar system somewhere beyond the orbit of Pluto. But NASA just finished an exhaustive survey — and it completely failed to turn up any evidence that "Planet X" exists.

The European Southern Observatory's Very Large Telescope has been used to create history's first-ever map of weather on the surface of a brown dwarf. These images provide us with an unprecedented look at the atmospheric features of these poorly understood "failed stars."

For nearly three years, the Wide-field Infrared Survey Explorer (WISE) satellite was one of our most potent tools in the search for asteroids, discovering 33,500 of them (more than a dozen of which are potential impact threats) before being placed into hibernation in 2011. But with a new-found interest in asteroid…

Scientists have detected millions of previously hidden supermassive black holes surrounding us, some of them busily eating a thousand of newly discovered "extremely bright and extremely rare" galaxies called hot DOGs (Dust-Obscured Galaxies). Astronomy is fun!

NASA's Wide-field Infrared Survey Explorer (WISE) telescope surveyed the universe twice during its 14-month mission, generating a wealth of data in the process. Now, by sifting through that data, WISE astronomers have unveiled one of the telescope's most impressive finds yet: 2.5 million supermassive black holes —…

In 2009, NASA launched its Wide-field Infrared Survey Explorer (WISE) telescope, an Earth-orbiting infrared observatory designed to map the entire sky in unprecedented detail. WISE surveyed the sky for less than two years, but in that time collected vast quantities of information: It's been eighteen months since the…

Supermassive black holes, rare galaxies, oh my! Tomorrow afternoon, NASA will be hosting a teleconference to discuss new discoveries surrounding these and other extreme deep-space objects.

Blazars are a special kind of black hole - the kind with jets that are pointing right towards us! They're white hot and heading our way, but the only way we can spot them is with cool infrared telescopes. Take a look at the black holes that blaze.

After fourteen years of preparation and three years of collecting data, we now have an atlas of the entire infrared sky. This image is just the capstone for a cosmic map that contains 18000 images and 560 million different objects.

This is Puppis A, the remnants of a violent supernova that exploded 3,700 years ago, glowing red as its shockwaves still heat up the dust around it. But Puppis A is really special because it hides the "Cosmic Cannonball."

Many of you have probably heard about asteroid 2005 YU55, the massive rocky body that tomorrow night will collide with Earth in a ball of flames pass the planet safely, albeit closer than any asteroid in the last 35 years.

In 185 CE, Chinese astronomers reported the presence of an incredibly bright "guest star" that appeared suddenly in the sky and stayed there for months. This was the first recorded supernova...and astronomers are only now understanding what it really is.

Black holes "flare" when they release gigantic jets of material into space. While we've learned much about these jets and the accretion disks that feed black holes, we still know little about the ultra-bright, incredibly energetic bases of these jets.

This image taken by NASA's Wise Satellite is in the infrared spectrum, meaning it can reveal the light that is normally hidden behind thick, dark clouds of gas. But some clouds are so dark that no light can get through.

Last year, NASA announced that it had discovered 14 of the coldest stars it had ever recorded. The so-called "brown dwarfs" were, at that time, listed among the coldest known stars in our universe.

Trojan asteroids are objects that share a planet's orbit around the Sun but reside in what are basically gravitational dead zones. We've discovered Earth's first Trojan asteroid...but how did it get there, and why have we only just found it?

With weird western Cowboys & Aliens coming out next week, we couldn't help but wonder: were there any real 19th century weapons that could compare to Daniel Craig's alien energy weapon? As always, never underestimate the awesome craziness of the 19th century.

The star Zeta Ophiuchi is twenty times the size of our Sun and flying blind through space. Its runaway path has taken it through a huge clump of space dust, creating this beautiful bow-shaped "wake" of gas and dust.