From now until August 31, 2009 when you buy one day, you get the second one free. And, with 14 participating attractions in the area, having two days to take in as much as you can is a pretty good deal.

So, if you’re still looking for some ideas on how to spend the 4th of July holiday weekend, you can pick up a pass and start your adventure with seeing a show in both the ATK IMAX and Hansen Dome Theatres (may I suggest the recently added Bugs 3D! and Extreme Planets?). Then, head out to visit our other friends participating in the program.

Check out the Salt Lake Convention & Visitor Bureau’s website for a complete pricing breakdown and to order your pass online.

10. Free exhibits: With over 10,000 sq. ft. of exhibits to explore, this is a great no cost activity that can easily entertain visitors for a couple of hours.

9. Summer Camp: Back by popular demand, the “How to Build and Use a Telescope Camp” is a 3 day intensive 3-day astronomy camp for kids ages 12 – 17 that includes lots of hands-on instruction and a 6-inch Dobsonian telescope.

8. Matinee Theatre Tickets: All shows in the ATK IMAX and Hansen Dome Theater are just $6 before 5 p.m. every day. A complete list of show times is available here.

7. Rockets!: Planet Fun Clark Planetarium Store has  a wide variety of engine, chemical reaction and air powered rockets. Summer is a great time for building rockets and then getting a group together to launch them to see who’s will fly the farthest.

6. Star Parties: Our friends at the Salt Lake Astronomical Society have free public star parties on a regular basis. A complete schedule is available on the club’s website.

5. Connect Pass: If you are looking to experience a multitude of venues over a period of up to three days, the “Visit Salt Lake Connect Pass” allows you to visit Clark Planetarium and 12 other area venues for $40 for adults and $32 for children.

4. Bug Catchers: Explore the wonders of your backyard and beyond while collecting bugs. Planet Fun has a wide array of butterfly pavilions, beetle barns and other bug catching containers.

3. Build your own planisphere: Download materials from the planetarium’s website to help find constellations in the nighttime sky.

2. Cosmic Light Shows: Cheaper than a concert and a great activity for date night, Cosmic Light Shows (complete with lasers and other special effects) play nightly in the Hansen Dome Theatre and feature artists like U2 and Pink Floyd.

1. Memberships: The best value for those who like to visit Clark Planetarium on a regular basis. Members get in to all IMAX and Dome theatre shows free for one year plus great discounts at Planet Fun, concessions and more.