Spend an evening among the stars Saturday as Highland Road Park Observatory, 13800 Highland Road, holds at its ninth annual International Astronomy Day celebration.

The event is from 3 p.m. to 11 p.m.

One day every year, astronomy clubs, observatories and other groups of sky lovers band together to discuss the wonders and excitement of astronomy.

Officially, Astronomy Day is celebrated “to promote the forerunner of all scientific endeavors and to provide information, resources and encouragement in all facets of astronomy,” but showing that astronomy is fun is really what it’s all about, a news release from BREC said.

The observatory’s International Astronomy Day celebration invites guest to explore a range of activities, including Scope-on-a-Rope, homemade comets, a renaissance sundial, radio telescope demonstrations, a sky tour at dusk and a slide and bounce house.

Exhibitors will include the Baton Rouge Gem and Mineral Society, the Baton Rouge Metropolitan Airport, the Baton Rouge Zoo, the Bluebonnet Swamp Nature Center and LIGO.

The Baton Rouge Amateur Radio Club also will teach patrons to send their name using Morse code; Episcopal High’s KnightVision Team will present the robot it entered in this year’s U.S. First Robotics Competition; and St. Joseph’s Academy will demonstrate 3-D printing.

The event is free and features raffles, food and games for all ages.

For information, visit hrpo.lsu.edu/programs/astronomy_day.html or call the observatory at (225) 768-9948.

Get your hats ready

The Hat Run starts at 7 a.m. Saturday at Pennington Biomedical Research Center.

The event, which features a 1-mile fun run and walk, and a 5K run and walk, promotes skin cancer awareness and provides free, onsite skin cancer screenings.

A children’s activity tent will include face painting, hat crafts and sun education.

To register, visit thehatrun.com.

Derby Day festivities

BREC’s Farr Park, 6402 River Road, is hosting its first Derby Day from 3 p.m. to 6 p.m. on May 2. Guests are invited to a Kentucky Derby viewing party, featuring the televised race, food, drinks, a wine tasting, a silent auction, a hat and bow tie contest and games.

Visitors will get to experience Kentucky Derby traditions, including mint juleps and floppy hats.

General admission tickets are $20 and include free nonalcoholic beverages. The VIP section includes a table for 8 for $200 and is located in the arena with up-close access to Derby Day activities.

Tickets can be purchased online at webtrac.brec.org.

For more information, call (225) 769-7805.

Miracle League tickets

Tickets are on sale for the Miracle League at Cypress Mounds’ All-Star Game and Fundraiser on May 2.

The Miracle League is a baseball league for children with special needs.

This community event is from 1 p.m. to 4 p.m. at the Cypress Mounds Baseball Complex on Gardere Lane, with an All-Star game featuring Miracle League players beginning at 1:30 p.m.

Advance tickets are $7 and can be purchased at eventbrite.com. Tickets are $10 at the gate and include jambalaya and a beverage.

Contact Southside Advocate Editor Darlene Denstorff by phone, (225) 388-0215 or (225) 603-1998; or email southside@theadvocate.com. Deadline: 2 p.m. Friday.

Editor’s Note: This story was changed to correct the time of the BREC Derby Day event.