Sail the Seas with Celebrity Constellation and See the Stars.br br Sail the seas with Celebrity Constellation and see the stars! This luxury cruise ship offers a variety of amenities and activities, including fine dining, world-class entertainment, and stunning views of the ocean. You can also take advantage of the ship's many stargazing opportunities, from starlit cruises to astronomy lectures. So whether you're looking for a relaxing vacation or an exciting adventure, Celebrity Constellation has something for you.