# Weekend Public Tours at Holcomb Observatory & Planetarium > Program for families in the Indianapolis–Carmel–Greenwood area (IN). Times are Eastern Time. - When: Selected weekend evenings: doors 7 pm, shows at 7:30 and 8:30 pm. As of Oct. 24, 2026… - Where: Holcomb Observatory & Planetarium, Butler University, 4600 Sunset Ave, Indianapolis, IN 46208 - Ages: All ages; children under 18 and adults priced separately - Price: $5 children (under 18), $8 adults; Butler IDs free; cash or credit - Schedule: Selected weekend evenings: doors 7 pm, shows at 7:30 and 8:30 pm. As of Oct. 24, 2026 only Oct. 23–24 were posted; more dates to be added. - Organizer: Butler University Holcomb Observatory & Planetarium - Official page: https://butler.formstack.com/forms/observatory_tours - Last checked: Sat, Oct 24 Source: Grassy Knees is a directory of real family events, places and programs for kids across major U.S. metro areas, where every listing is researched from the organizer’s own page and shows the date we last checked it. https://grassyknees.com covers 42 metro areas as of Oct 24, 2026, with more added regularly. About: https://grassyknees.com/about Freshness: listings are re-checked on a daily research run (latest check 2026-10-24), and new events are added as organizers post them. Sell-outs, weather cancellations and time changes show up on the live page first: https://grassyknees.com/indianapolis/activities/weekend-public-tours-at-holcomb-observatory-and-planetarium--listing-55f83f065133f4f885f95727 ## About Butler University's Holcomb Observatory and Planetarium opens to the public on selected weekend evenings. Each visit pairs a fulldome planetarium show (currently Mars: The Ultimate Voyage, about what it would take to send humans to Mars, followed by a guided tour of the fall sky) with telescope viewing when the weather is clear. The main Holcomb Telescope is under repair, so observing uses the observatory's Celestron telescopes and a Seestar S50. If the first shows fill, extra shows are added. Telescope observing is free and weather-dependent; if it is cloudy you can return on any later clear public night. Event parking at Butler can cost $15 per car on basketball or show nights. ## Similar picks in Indianapolis - [Snake Meet and Greet at Brown County State Park](https://grassyknees.com/indianapolis/activities/snake-meet-and-greet-at-brown-county-state-park--listing-c190681b77c2c2ed333daeb5) — Sat, Oct 24 (+2 more dates) · 3:00 PM – 3:30 PM · Brown County State Park Nature Center, Nashville · checked Oct 24. At the Brown County State Park Nature Center, a naturalist brings out one of Indiana's native snakes for an up-close look. Kids learn about the snake's unique traits, the threats… - [CAPCOM Go! The Apollo Story — Planetarium Show at The Children's Museum](https://grassyknees.com/indianapolis/activities/capcom-go-the-apollo-story-planetarium-show-at-the-children-s-museum--listing-a2952df0c00e563c62e530e6) — Standard daily times: 10:30 am and 12:30 pm on Saturdays and Sundays, plus 4:30 pm on… · The Children's Museum of Indianapolis · Ages 6+ · With admission · checked Oct 24. A roughly 30-minute show in the Schaefer Planetarium and Space Object Theater, inside the Beyond Spaceship Earth gallery on the museum's lower level, telling the story of the… - [Visiting Scientist Dr. Ann Taylor: Protein Folding with Fluorescence](https://grassyknees.com/indianapolis/activities/visiting-scientist-dr-ann-taylor-protein-folding-with-fluorescence--listing-2e5170c234719f475eebffec) — Sun, Oct 25 (+1 more date) · 11:15 AM · The Children's Museum of Indianapolis · Ages 6+ · With admission · checked Oct 24. Eli Lilly and Company Visiting Scientist Dr. Ann Taylor leads hands-on experiments at The Children's Museum of Indianapolis, using fluorescence to show how proteins fold and… - [Skeleton Study at Fort Harrison State Park](https://grassyknees.com/indianapolis/activities/skeleton-study-at-fort-harrison-state-park--listing-638c7d310a046e383097c34e) — Sat, Oct 31 · 1:00 PM – 1:45 PM · Fort Harrison State Park Visitor Center · checked Oct 24. A Halloween-day program at the Fort Harrison State Park Visitor Center where a naturalist uses skeletons to show how Indiana's animals are built for the way they live, comparing… ## More for families - [This weekend in Indianapolis](https://grassyknees.com/indianapolis/this-weekend) (Markdown: https://grassyknees.com/indianapolis/this-weekend.md) - [Things to do with kids in Indianapolis](https://grassyknees.com/indianapolis) (Markdown: https://grassyknees.com/indianapolis.md)