Interesting
all age range
50 to 100 words
English
Little Timmy found a shiny, silver postcard in his grandpa's attic. It was marked with strange symbols.
Apparently, it was sent by an alien civilization far, far away.
The card contained specific requirements: send one smile back in return. It had taken considerable energy to arrive.
Timmy smiled his biggest, brightest smile. Hopefully, they got it!
Days later, his grandpa received a note: 'Message received. Gratitude.' Timmy knew he'd made some intergalactic friends.