Facebook CEO Mark Zuckerberg is putting the social network’s live video tool to the test in space.On Wednesday, the 32-year-old tech mogul will be chatting via live video with three astronauts who are living and working aboard the International Space Station, asking them questions submitted by users on the social media site.
The 20-minute call using Facebook Live is scheduled at 9:55 a.m. PT on Wednesday and can be viewed on NASA’s Facebook page.
Zuckerberg will be chatting with NASA astronauts Tim Kopra and Jeff Williams, and Tim Peake from the European Space Agency.
The International Space Station, which serves as a laboratory for microgravity research, is the largest artificial body in orbit and can often be seen from the Earth with the naked eye.
People from throughout the world have already started posting questions online and as of Tuesday morning there were more than 131 posts on the event’s page. More than 3,900 people are interesting in attending the event.
So far, questions submitted include “What happens if you sneeze in a helmet in space?,” “How is fuel supplied to the space station to orbit around the earth?” and “What is the protocol should someone on the station become sick or develop a contagious illness?”
Competing with Twitter’s Periscope, Facebook expanded its live video tool to all users in April.