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Standing in a hallway decorated with images of planets and other space objects, John Spencer is looking at a high resolution photo of Pluto hanging in…

Less than 1 percent of applicants make the cut. But there's more than one way in. Passion helps. Be persistent. Oh, and be tops in what you're doing right now.

Mars used to be much warmer and wetter than it is today. Scientists are unraveling the mystery of why it dried out.

A new analysis of particles believed to be from the bottom of oceans inside Enceladus suggests the moon is toasty warm.

On Friday morning, NASA plans to launch the Orion spacecraft. It's seen as a first step in a possible human journey to Mars. Coloradans have a reason to…

The new vehicle, named Orion, is designed to carry humans into deep space. But most Americans aren't aware it exists.

Down in the Four Corners area, near the towns of Durango, Colorado, and Farmington, New Mexico, a NASA satellite has spotted an unexpected hot spot of…

Earlier this week, NASA awarded two contracts for new spaceships to commercial companies. Here's how they compare.

Four billion years ago, Mars may have looked completely different. Water could have flowed across the planet's surface. There might have been life. To…

When Front Range residents look to the skies for the next few weeks, they may see something unusual – a NASA P-3 airplane buzzing just a thousand feet…