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Watch the live video documenting the end of the Grail moon mission, and check out the tweets by searching for the hashtag #GRAIL:
David Burch's profile photoAlan Boyle's profile photoDavid Andrews's profile photo
Are we able to go anywhere without leaving a stream of garbage behind us?
I'm imagining orbital garbage collectors in the 22nd century, wondering how we could have been so wasteful. Actually, that's how +David Brin's book "Existence" begins...
yes. Consider the refined precious metals and highly engineered materials committed to reentry.
What a resource.
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