Re:The Hoba meteorite, estimated at 66 tons, left no crater ...
by twic on Saturday November 10, 2018 @06:10PM
(#18424019)
There's a Stephen Baxter novel from a quarter of a century ago [1] in which an antimatter meteorite falls to earth, and via undisclosed handwaving, ends up as a deposit in the Antarctic, which is subsequently mined to provide a source of power for various steampunk shenanigans:
https://www.thebooksmugglers.com/2010/04/steampunk-week-book...
[1] yikes
Now think about the equivalent meteorite falling today: what substance could it be comprised of that we haven't synthesized or seen yet? Maybe an exotic isotope of an otherwise common element which demonstrates some exotic properties. Superconducting at room temperature maybe.
Amazing to think about what asteroids could be out there headed our way (and not big enough to destroy everything).