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Until we grow up and invent faster-than-light travel, the Solar System will be our playground. If we don’t kill ourselves first, it’s a good bet that humanity will have a significant footprint in the Solar ...

Amazing selfie taken by Chris Hadfield during a spacewalk.  Chris Hadfield: Some selfies are more thought-provoking than others. Amazing what you can see in the reflection.

Amazing selfie taken by Chris Hadfield during a spacewalk. Chris Hadfield: Some selfies are more thought-provoking than others. Amazing what you can see in the reflection.

NASA ECHO II S-131, launched in 1964, was a metalized balloon satellite acting as a passive reflector of microwave signals. Communication signals were bounced off of it from one point on Earth to another.

NASA ECHO II S-131, launched in 1964, was a metalized balloon satellite acting as a passive reflector of microwave signals. Communication signals were bounced off of it from one point on Earth to another.

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