Never heard of that before.

They hope to start it later this year (2008). Project constellation is that simulated module is a flight test article, and it's part of an unmanned abort tests.

It was named after the constellation Gemini (twins).

i have no idea why it was named but i need this for a school project so someone help me

Possibly. Though the Shuttle Program has ended, NASA is still working on a new program called Project Constellation and along with trying to live in space, Project Constellation may be put to the test of landing on Mars. Hope this helps.