Astronaut s Sudden Flu-Like Symptoms Cause Grave Emergency | NASA s Unexplained Files

Stream Full Episodes of NASA s Unexplained Files: https://www.discoveryplus.com/show/nasas-unexplained-files From Season 5, Episode 5: Stonehenge on Mars Space Plague: An astronaut suddenly exhibits flu-like symptoms. Subscribe to Science Channel: http://bit.ly/SubscribeScience Like us on Facebook: https://www.facebook.com/ScienceChannel Follow us on Twitter: https://twitter.com/ScienceChannel Follow us on Instagram: https://www.instagram.com/ScienceChannel/