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Anatomy of a Snowflake
The adage goes that no two snowflakes are alike but that's only partially true. Snowflakes fall into 35 distinct categories. Here's a look at eight of them.
A mysterious particle from a distant galaxy made its way to an observatory in Antarctica01:12
Cheetah 3 is a blind robot that doesn’t need sensors to navigate01:16
'The Meg': Is the terrifying prehistoric shark from Jason Statham's new movie real?03:24
The human factor: What it will take to build the perfect team for traveling to Mars07:42
The devastating California wildfires from space01:07
Touching the sun: NASA solar probe to go where no spacecraft has gone before01:51