Here is a closer look at what items are permitted, what to leave at home, and what special considerations apply when attending events such as the NASA Langley Research Center’s Open House.

Natalie Chun and her son love astronauts and space. So, when NASA's Sunita "Suni" Williams visited Bonnie's Donuts, Chun's donut shop in League City, earlier this week, it was a close encounter ...