What s going on in Tucson, Arizona this weekend: artisan markets, steampunk convention, vegan market, plant sales, toy show and more in the Tucson, Marana and Oro Valley area.
The specimen of the mineral stibnite was extracted in 2003 from the Wuling Mine in southeastern China and is exceptionally rare for its size, intricacy and quality.
As NASA saw its first asteroid sample return to Earth, three museums took particular notice, knowing they had been chosen to display small examples of the space rock material.
As NASA saw its first asteroid sample return to Earth, three museums took particular notice, knowing they had been chosen to display small examples of the material.