Mars: I'm sure NASA knows more about this than I do, but when I watch the "popular science" shows they produce I always wonder.
The proof of water is in the rocks. The rocks they examined are in a crater. Craters are caused by collisions of large objects on the planet. Where did the water come from?
There are all the minerals needed to create life on Mars. The proof of water is in the rocks (see above). Are we alone in the universe? Can Science answer a theological question...?
All I can say is I'm alone in my office and there's coffee in my cup.
It's all cool though.
Black Holes: I'll see your black hole and raise you a supermassive black hole
and a qausar