intelligence

Falling Satellite Probably Not a Danger

The NROL-21 USA-193 spy satellite failed almost immediately after launching over a year ago—now it's on its way down

Delta Launch:
It started out as a 10-ton satellite packed with hazardous materials plummeting towards Earth. Then it dropped down to 4 tons, and the materials turned out not to be hazardous. Details are still sketchy, but it now seems clear that the NROL-21 USA-193 satellite that failed just hours after its December 2006 launch is now on its way back down to Earth. Should we be worried?

[ Read Full Story ]
READ MORE ABOUT > , , ,

PROMOTION

POPSCI'S 21ST ANNUAL BEST OF WHAT'S NEW


Every year, PopSci honors the top 100 innovations in categories such as consumer products, medical tech and engineering.

Learn more and submit your product or technology today at popsci.com/enter.

PPX: The PopSci Predictions Exchange

RSS Link

New IPO

Hot Stocks

Ready to bet on the future? Start here!

Subscribe for 2 free issues!

may2008_cover.jpg