According to a new model, days on Earth used to really fly by, and today Pluto has wind-swept dunes made of very weird sand.

Something heavy seems to be causing Uranus and Neptune to move in a different orbit than what we can currently account for with the celestial objects we know of. Is there a 9th planet? Does planet 9 exist? Is planet X...

This live-action video program is about the word planet. The program is designed to reinforce and support a student's comprehension and retention of the word planet through use of video footage, photographs, diagrams and colorful,...

This live-action video program is about the word planet. The program is designed to reinforce and support a student's comprehension and retention of the word planet through use of video footage, photographs, diagrams and colorful,...

Simulations of young stellar systems suggest that planets embedded in a circumstellar disk can produce many distinctive structures, including rings, gaps and spiral arms. This video compares computer simulations of hypothetical...

Earlier this spring NASA announced a new research model that predicts that ocean worlds are far from rare, and our galaxy might be full of them. And a new study examines evidence that Pluto may have had an underground ocean all along!

A conversation with Kimberly Ennico Smith, Project Scientist for SOFIA at NASA’s Ames Research Center in Silicon Valley.

A few months before New Horizons was due to reach Pluto, a community of scientists came together to determine just what kind of a environment the mission would experience during its historic flyby. While the simulations aren't 100%...

This live-action video program is about the term solar system. The program is designed to reinforce and support a student's comprehension and retention of the term solar system through use of video footage, photographs, diagrams and...

Remember those old space movies where spaceships had to maneuver through a bunch of asteroids scattered around and blocking the path of the ship? Well, that's not really true. The asteroid belt contains asteroids which are so far apart...

Remember those old space movies where spaceships had to maneuver through a bunch of asteroids scattered around and blocking the path of the ship? Well, that's not really true. The asteroid belt contains asteroids which are so far apart...