What a ball-shaped Sfera satellite looks like

Nice photo today from Canadian astronaut Chris Hadfield (@Cmdr_Hadfield) showing the ball-shaped Sfera satellite that will be deployed during today's EVA.


More details on these interesting mini-micro-tiny sats via NASA:

The Sfera satellite (also known as Vektor-T calibration sphere) is a simple sphere for determining atmospheric density by tracking and measuring its drag. It will be in orbit for 2-5 months, and will burn up completely upon re-entry.]

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