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.
Airborne diseases are spread when droplets of pathogens are expelled into the air due to coughing, sneezing or talking. Airborne diseases of concern to emergency responders include: Meningitis Inflammation of the meninges of the brain and the spinal cord. Chicken pox. Tuberculosis (TB). Influenza. Many of these diseases require prolonged exposure for infection to occur, posing only minimal threat to emergency responders.