From left, Cobie Smith, 5, and Tatume Smith, also 5, have their picture taken with 'Dora the Explorer.' The children were participants in Nickelodeon's Worldwide Day of Play celebration at Stennis Space Center (SSC) on Oct. 1. The Worldwide Day of Play is sponsored annually by Nickelodeon television network to encourage children to be physically active. Approximately 150 children participated in the event at SSC.

From left, Mallory Doody, 5, Natalie Cambre, 3, Madison Doody, 7, and Anna Cambre, 6, get ready to compete in a sack race. The children were participants in Nickelodeon's Worldwide Day of Play celebration at Stennis Space Center (SSC) on Oct. 1. The Worldwide Day of Play is sponsored annually by Nickelodeon television network to encourage children to be physically active.

Sarah Dastugue, 11, leaps in the air as Libby Knox, 9, swings a jump rope. The children were participants in Nickelodeon's Worldwide Day of Play celebration at Stennis Space Center (SSC) on Oct. 1. On the day of the event, children all over the world participate in physical activities as part of the celebration.

jsc2019e029850 (4/2/2019) --- Preflight imagery of the Non-Newtonian Fluids in Microgravity (Nickelodeon Slime in Space) investigation slime bag. The bags are made with food grade PVC and have a capacity of 350 mL. The slime bags have two ports: one remains sealed and the other has a long tube which can be sealed with a pinch clip. The bags are filled with Nickelodeon's slime material. On the space station, the slime is extruded through the tube with the pinch clip. Image courtesy of the International Space Station U.S. National Laboratory.