Has something ever left the Milky Way?
Yes, something that we have created already left the Milky Way Galaxy; it might have even reached Andromeda Galaxy, 2.5 million light-years away and 59 currently known satellite…
What should you never say at the US-Canada border?
I got myself into long-term trouble. Maybe this story can help someone avoid shady border officers’ tactics at the border. I did some contract design work for an…
If I shoot a bullet at Earth from the Moon, what will happen when it reaches the Earth?
The .220 Swift remains the fastest commercial cartridge in the world, with a published velocity of 4,665 ft/s (1,422 m/s) and the escape velocity of the MOON is 2,400 m/s so the…