
Can any animal defeat a great white shark in an open water fight (not cage)?
Killer whales know a neat trick to immobilize great white sharks — although it must be said that they do not need the trick, nor that they always use it….

Why is the F-35 so inflated and ugly looking, while the SU-57 is slick and compact and half of the cost of an F- 35?
It’s amazing how many people will post detailed answers to questions that they clearly do not know the actual answer to. The F-35, AKA “Fat Amy”, is “fat”…

Could the Germans have won Operation Barbarossa?
This is a very common question – if just a few more things had gone Germany’s way, could they have pulled it off? The most important thing to…

How much would a cubic inch of a neutron star weigh? What would happen if it suddenly appeared on earth?
Neutron stars are made of neutronium which is neutrons packed shoulder to shoulder by intense gravity and has a density in the neighborhood of 10^17 Kg/m^3 which is…

What did the Apollo 11 astronauts see on the moon that had them so shaken up?
I had the good fortune of having a very long dinner with Gene Cernan about 15 years ago. He was the last man to walk on the moon….