In the far distant future in the year 4527, a number of scientists from all over the universe were having a convention on a far distant galaxy. Two beings were seated next to one another when they struck up a conversation.
"Where are you from?" the one asked.
"I'm from Alpha Century," he answered. "Where are you from?"
"I'm from Earth" was the answer.
"I know someone from earth," the Alpha Centurion said. "John Smith. Do you know him?"
Two molecules are walking down the street and one starts looking around. The other asks,
"I have lost my electron!"
"Are you sure?"
During the initial space flights, Nasa discovered that biro pens didn’t work under zero gravity conditions. To beat the problem, Nasa spent 6 years and $2 million in designing a pen for use in space. The pen would work under zero gravity conditions due to the pressurized ink inside, it would work under sub zero conditions, underwater, on glass and virtually any surface known to man. The Russians used a pencil.