How Stardatecards™ Greeting Cards work: Messages are sent to space using a laser adapted telescope at Science Alive! The New Zealand Science Centre, in Christchurch. Sending messages to space is quick and easy: Locate the card's image you have purchased from the images below. Click on the button below the image to target your message. Enter your card's message in the text box below. Press continue to enter the card activation number found inside the Stardatecards™. To learn more about the astronomical target that your message will travel to, click on the image of the card you are activating. Stardatecards™ Greeting Cards South Polar Group of Galaxies Centaurus Galaxy Southern Cross Horsehead Nebula Pleiades Star Cluster Lagoon and Trifld Nebulas Jewel Box Sombrero Galaxy Stardatecards™ Personal Star Cards Sirius Canopus Acrux Alpha Centauri Type your personal message: (400 character maximum)