Tag Archives: Miranda

NASA’s Voyager 2 spacecraft

As NASA’s Voyager 2 spacecraft made the only close approach to date of our mysterious seventh planet Uranus 25 years ago, Project Scientist Ed Stone and the Voyager team gathered at NASA’s Jet Propulsion Laboratory, Pasadena, Calif., to pore over the data coming in.

Images of the small, icy Uranus moon Miranda were particularly surprising. Since small moons tend to cool and freeze over rapidly after their formation, scientists had expected a boring, ancient surface, pockmarked by crater-upon-weathered-crater. Instead they saw grooved terrain with linear valleys and ridges cutting through the older terrain and sometimes coming together in chevron shapes. They also saw dramatic fault scarps, or cliffs. All of this indicated that periods of tectonic and thermal activity had rocked Miranda’s surface in the past. (more…)

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Flickr says that by Oct 12 2009, it uploaded 4 billion photos. Flickr was born in Ferbruay 2004.

Facebook says that it’s the largest photo-sharing site with over 2.5 billion photos uploaded to the site each month. Facebook was born in 2004 in Harvard dormitory, fathered by Mr. Mark Zuckerberg. 🙂


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