On the Moon they would weigh only 200 N. The astronaut's mass is 120kg wherever they are. The weight of an object changes if the strength of gravity changes. Remember: a mass of 1 kg has a weight of about 10 N on Earth.
The droplets in the air may be breathed in by those nearby. Spread can also occur by touching the nose or mouth with droplet contaminated hands. Examples of droplet spread diseases: 1  common cold. 2  flu. 3  meningococcal disease. 4  rubella.
Is Airborne Spread of Influenza Possible? By Amesh A. Adalja, MD, January 22, 2009. A new study1 from researchers at West Virginia University demonstrates that the influenza virus is able to remain suspended in the air, thus enabling airborne transmission. This finding suggests the possible need for more stringent infection control measures to forestall spread of seasonal influenza within hospitals.