Four hundred years ago, an Englishman named Thomas Harriot turned a telescope on the Moon and marvelled at its rugged, cratered surface. The drawing he made that night is the oldest known depiction of a celestial object as seen through a telescope, beating Galileo by four months.

We offered lucky Twitterers a chance to win FREE tickets to the Telescope400 event celebrating the 400th anniversary of Harriot’s achievement. Telescope400 is an exciting astronomically-themed day for space enthusiasts young and old taking place at Syon Park, West London on Sunday 26 July 2009.

The competition was simple: put yourself in Thomas Harriot's shoes. Imagine being the first person ever to observe the moon through a telescope. Then imagine that Twitter was around 400 years ago! How would you announce your observations to the world in 140 characters or less?

We had four winners to the competition, each winning a special edition Moone Catalogue plus tickets to the Telescope400 event. The winners were:

@scibuff: "Indeed it moves, but I saw the moon first"

@AJAshworth: "Hmmm... did this months ago. RT @GalileoGalilei I've just viewed the moon thru my telescope!"

@AlphaLyrae: "Magnified our glorious moon, Surface stark and rubble-strewn, Valleys dark, Peaks of white, Dazzled in refracted light"

@mafunyane: "It's one small squint for man, one giant wonder for mankind."

Congratulations to all!