Natural history museums' acquisitions always instill wonder in children who have become bored with their own closets full of skeletons. Discover a body of knowledge with today's Groupon to the Museum of Natural History & Planetarium. Choose between the following options:

• For $6, you get six admission tickets, valid for both the museum and planetarium (up to an $18 value; admission is free the first Saturday of the month for Providence residents).
• For $25, you get a one-year family membership (a $50 value).

Owned and operated by the city of Providence, the Museum of Natural History & Planetarium shelters more than 250,000 historical artifacts from Rhode Island and around the world. The history house, opened in 1896, boasts a collection of 175,000 plants and animals and 20,000 archeological artifacts including macaroni artwork made by the first man. An array of exhibits dazzles museum-goers as they meander through the cultures of Oceania, Africa, and Native American societies, and unearth information about the discovery of planets. Then eager learners can head to the planetarium where a 14-foot-tall, 28-foot-wide dome showcases the night’s stellar spectacles splashed on the ceiling by a computer-controlled projector. The cosmos-speckled facility also proffers a selection of shows that take adventurers on journeys to the sun, the moon, and the homes of Hollywood’s biggest stars.

Groupon holders can also opt for a year-long family membership to enjoy free admission to all temporary and permanent exhibits for two adults and up to four children. Members also receive invitations to exhibition preview parties, behind-the-scenes tours, a subscription to the museum’s monthly newsletter, and a 10% discount on purchases from the museum gift cart. Members help support the museum and its educational programs, and the slew of member benefits make them feel like red-carpet regulars or calculators in a room full of abacuses.