official news from : https://bit.ly/2QkyIbY NASA astronaut Chris Williams will connect with students in Pennsylvania to answer prerecorded science, technology, engineering, and mathematics (STEM) questions while aboard the International Space Station. The Earth-to-space call will begin at 12:20 p.m. EST Thursday, Feb. 5, and will stream live on the agency’s Learn With NASA YouTube channel.Continue reading “NASA Astronaut to Answer Questions from Students in Pennsylvania”