2 replies to this topic

[Humpty]

5. Dark Matter:
Scientists think it makes up the bulk of matter in the universe, but it can neither be seen nor detected directly using current technologies. Candidates range from light-weight neutrinos to invisible black holes. Some scientists question whether dark matter is even real, and suggest that the mysteries it was conjured to solve could be explained by a better understanding of gravity.
Top 10 Bizarre Things in Space

[Andavari]

I'm surprised garbage isn't one of them after all the space missions that left crap behind.

[DennisD]

Fascinating stuff.