All speakers, unless noted, will be at the main stage, corner of Pittsburgh Street and Grand Avenue, by the spaceship.

5 p.m. — Festival opens with Mayor Gregg Hartung and Mark Harvey, meteorologist for WTAE

5:15 p.m. — Rocket launch with Pittsburgh Space Command

6 p.m. — Jim Christiansen, chief innovation officer, Aldrin Family Foundation, Retired

6:45 p.m. — Dr. Soyeon Yi, South Korea’s first astronaut

7:30 p.m. — Jim Green, former NASA chief scientist, introduced by Jeff Beckstead, of the Mars Robotics Association

8 p.m. — Rocket launch with Pittsburgh Space Command

8:30 p.m. — Let's Groove Tonight; Earth, Wind, & Fire Tribute Band

10 p.m. — Firefly Drone Show

10:15 p.m. — Festival ends

2 p.m. — Kerry Handron, Allegheny Observatory outreach coordinator; a student from the Allegheny Observatory High School Club; and Travis Court, University of Pittsburgh grad student

3 p.m. — Rocket launch with Pittsburgh Space Command

3:15 p.m. — STEAM Challenge Awards presentation with Jenay Sharp Leach

4 p.m. — Mars Costume Contest

4:45 p.m. — Martian of the Year Award

5 p.m. — Dr. Catherine Regan, planetary scientist, West Virginia University

5:30 p.m. — Rocket launch with Pittsburgh Space Command

6 p.m. — Martian Melodies Orchestra concert at Mars Presbyterian Church on Crowe Avenue

7 p.m. — Mackenzie Sloan, electrical engineer and software team lead at Kennedy Space Center and Seneca Valley High School alumnae

8 p.m. — Rocket launch with Pittsburgh Space Command

8:30 p.m. — The Pulse

10 p.m. — Firefly Drone Show

10:15 p.m. — Festival ends

3D Crafts & Curios

Armstrong/Armstrong Comfort Solutions

Artwork Display

Astro In Focus

Astronaut Training from Mars Area Elementary

CCA — Techworks

Civil Air Patrol, Pennsylvania Wing

Coherent

Cre8tiv Arts

Experience Butler

KidZone

Mars Robotics

Mountaineer Area Robotics

NASA

Pennsylvania Army National Guard

Pittsburgh Space Command 473

SAE A World in Motion

Solar System Ambassadors

Southern Butler County Business Association

Space Globes

STEAM Challenge

Steel City LUG (Lego Users Group)

West Virginia University — Department of physics

WQED

Cindy’s Munchies

Boy Scout Troop 400

Stick City

The Grandy Candy Shop

Nosh & Curd

Portersville Snowman

And two to three Pittsburgh-region-based food trucks

Armstrong

Experience Butler County

Planet Mart Food Mart

NexTier Bank

The Grable Foundation

Belleville International

Lutheran SeniorLife/St. John Community

Vogel Disposal

WQED

WTAE

Sheetz

RichMar Rotary

Electromat

Stick City

First Commonwealth Bank

Firefly Drones