SpaceX Dragon CRS-15 -

Aldrin remains confident that the United States will have paved the way for Mars travel within the next 20 years. But pioneering space missions aren’t his only goal. The NASA legend also hopes that his work will help bring together countries in a way that other programs haven’t done before. 

Photo Credit: NASA/R.Arnold/Flickr | CC BY-SA 3.0 IGO

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