This weekend is out of this world. In fact, it’s out of this galaxy. Adler Plantarium launches its new sky show — a virtual zoom through space and time, with twinkling constellations along the way. For down-to-earth amusement, hit Green Festival at Navy Pier, party with the moms of Bump Club and Beyond, and walk for Autism Speaks. Ready? You’re clear for takeoff.

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Museum Campus

Cosmic Wonders Sky Show
Unlock the mysteries of the universe. If that seems like a tall order, just sit back and enjoy the ride at this compelling new blitz through space. The Adler Plantarium’s domed theater acts as a virtual observatory as you look up at never-before-seen images of the night sky. The experience is immersive, thanks to advanced technology and footage from the Hubble Space Telescope. In fact, Crab Nebula appears to descend so close that you can touch it. Opens Fri. and runs daily through Apr. 1, 2014. Admission included in the museum’s Premium Pass ($28 for adults; $22 for children 3-11). Event details.

Downtown

Green Festival
Learn how to grow a plant without soil. Grab a bite at the vegan food court. Check out the latest in eco fashion for kids and grownups. It’s all at this fest, where close to 100 of Chicago and nation’s greenest activists, products and services converge. The Green Kids Zone brims with eco-friendly crafts, dancing and photo opps. Sat., 10:00 am-6:00 pm; Sun., 11:00 am-5:00 pm. Navy Pier. $10 for adults that purchase in advance; $15 at the door. Kids 18 and under are free. All ages. Event details.

Best of Bump Club and Beyond
Join the fun-loving group of moms and moms-to-be for its most popular event of the year. The big day includes seminars from nationally renowned experts, including Melisa Fluhr & Pam Ginocchio, founders of Project Nursery; Jamie Grayson, The BabyGuyNYC; and Dr. Deborah Gilboa, M.D. Meet the people behind great kids and baby brands, and buy their loot with exclusive offers at the onsite Galt Baby Pop-Up Shop. Bonus: There is more than $15,000 in giveaways. Sun., 10:00 am-2:00 pm. Chicago Marriott Downtown Magnificent Mile. $50-$100. Event details.

South Loop

Walk Now for Autism Speaks
The no-pressure, three-mile walk takes you leisurely by the Field Museum, Shedd Aquarium and lakefront. Strollers — and even Radio Flyer wagons — are welcome. Anyone is invited to participate, whether or not they choose to fundraise. Now in its 10th year, the event also has a resource fair and after-party featuring kid lures like inflatable bouncers and a petting zoo. Sat., 10:30 am. Soldier Field. Free. All ages. Event details.

Lakeview

Mayfest Kids Day
Lakeview’s Mayfest kicks off Chicago’s outdoor festival season, and this year it has a special daytime area just for little revelers. The theme is health, safety and wellness. Feel-good fun includes Zumba for children, arts and crafts, kiddie boot camp, nutritious snacks, balloons and a coloring contest. Parents can return at night for live bands and beer slinging. Sat., 10:00 am-2:00 pm. 3100 N. Ashland Ave. $10. All ages. Event details.

Evanston

Circus in Progress
Juggle some Big Top activity into your schedule with this edgy performance featuring up-and-comers from The Actors Gymnasium. Acrobats, aerial artists, trapeze dynamos and other tricksters show you what they’re made of. Sat., 4:30 pm & 7:30 pm. $15. All ages. Event details.

Aurora

Raffi
The iconic children’s musician showers you with original songs known for catchy rhythms and irresistible lyrics. Sing along with favorites like “Bananaphone” and “Baby Beluga.” Spirits will run high and smiles will be contagious. Sun., 1:00 pm. Paramount Theatre. $25-$35. All ages. Event details.

Which of these events will you go to with your family? Let us know in the Comments section below.

— Kelly Aiglonx

Photo: Courtesy of Adler Planetarium