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Can WISE Find the Hypothetical 'Tyche'?
Can WISE Find the Hypothetical 'Tyche'?
In November 2010, the scientific journal Icarus published a paper by astrophysicists John Matese and Daniel Whitmire, who proposed the existence of a binary companion to our sun, larger than Jupiter, in the long-hypothesized Oort cloud.Read More...
A Solar System Family Portrait, From the Inside Out
A Solar System Family Portrait, From the Inside Out
What would our solar system look like if visitors from other worlds took a series of pictures? NASA's MESSENGER spacecraft did just that by piecing together the first portrait of our solar system from the inside looking out.Read More...
The Two Faces of Tempel 1
The Two Faces of Tempel 1
Whichever part of comet Tempel 1 is facing toward Stardust when the spacecraft zips by the comet tonight should provide some great new science.Read More...
Five Things About NASA's Valentine's Day Comet
Five Things About NASA's Valentine's Day Comet
Here are five facts you should know about NASA's Stardust-NExT spacecraft as it prepares for a Valentine's "date" with comet Tempel 1. Feel free to sing along!Read More...
NASA Spacecraft Closes in on Comet Tempel 1
NASA Spacecraft Closes in on Comet Tempel 1
NASA is about to discover how solar heat devours a comet as the Stardust-NExT probe closes in for a Valentine's Day encounter with Tempel 1.Read More...
Who's Who at NASA: Dr. Jim Green, Director, Planetary Science Division, NASA Headquarters, Washington, DC
Who's Who at NASA: Dr. Jim Green, Director, Planetary Science Division, NASA Headquarters, Washington, DC
NASA Tech Briefs talks planetary science with Dr. James Green, the man in charge of NASA's robotic exploration of the planets, moons and bodies of our solar system.Read More...
A Fizzy Ocean on Enceladus
A Fizzy Ocean on Enceladus
Evidence is mounting that Saturn's moon Enceladus harbors a bubbly subterranean ocean where conditions might be friendly to life.Read More...
Sundiving Comet Storm
Sundiving Comet Storm
2010 ended with an unprecedented flurry of small comets diving into the sun. Researchers say this could herald a much larger comet still to come.Read More...
Asteroid Itokawa Sample Return
Asteroid Itokawa Sample Return
"It's an incredible feeling to have another world right in the palm of your hand," says Mike Zolensky, Associate Curator for Interplanetary Dust at Johnson Space Center. "We're seeing for the first time, up close, what an asteroid is actually made of!"Read More...
Geminid Meteor Shower Defies Explanation
Geminid Meteor Shower Defies Explanation
"The Geminids are my favorite," says NASA astronomer Bill Cooke, "because they defy explanation."

Most meteor showers come from comets, which spew ample meteoroids for a night of 'shooting stars.' The Geminids are different. The parent is notRead More...
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Last Updated: 7 Apr 2014