Dendrite Crystal Portraits Size:Small This item contains authentic meteorite

This item contains authentic meteorite dust from the Allende meteorite

the "primitive" look of the Araucaria hasn't changed much: straight

Our ice age began 2

" ~ René-Just Haüy

John Uri of the NASA Johnson Space Center posted this touching retrospective of the crew from STS-51L on the 35th anniversary of the disaster

Dendrite Crystal Portraits Size:Small This item contains authentic meteoriteThough they may look like fossil plants, dendrites are incredible and inorganic formations that occur solely due to interactions between physics and geochemistry. These branching patterns are made of manganese oxides and commonly form on the surface of sandstones. As the manganese cools, it crystalizes into thin, tree like shapes in the same process that creates snowflakes. This specimen is a sandstone slab that has been imprinted with a manganese