What Keeps Astronauts Up At Night?

Space is a challenging environment for astronauts, not only due to physical dangers but also because of sleep issues. Despite efforts by space agencies to improve sleep conditions, astronauts face logistical, environmental, and psychological barriers that disrupt their sleep. Factors like frequent day-night cycles, temperature, and CO2 levels contribute to poor sleep quality. Space agencies have implemented measures like dedicated sleep areas and air vents to help, but challenges remain.

Why is sleep particularly important for astronauts in space?

• It maintains their cognitive function and safety.

• It allows them to grow taller.

• It helps them stay entertained.

• It ensures they can communicate with Earth.

What percentage of days on the ISS have events that disrupt the astronauts' normal routine?

• 50%

• 5%

• 13%

• 25%

How many day-night transitions does the ISS experience in 24 hours?

• 8

• 12

• 16

• 24

What is the optimal temperature for sleep under blankets for most people?

• 35 degrees Celsius

• 30 degrees Celsius

• 25 degrees Celsius

• 22 degrees Celsius

What happens to carbon dioxide exhaled by astronauts on the ISS?

• It forms a bubble around their heads.

• It is immediately filtered out.

• It disappears into space.

• It turns into oxygen.

How does job-related stress affect astronauts' sleep?

• It makes them forget their tasks.

• It causes them to think about work when they should be sleeping.

• It has no effect on their sleep.

• It makes them sleep more.

What is one psychological factor that can disrupt astronauts' sleep?

• Too much exercise

• Lack of food

• Excitement

• Boredom