1. The challenges of space travel

2. Learning goals revisited
I will be able to identify the risks associated with space travel!

3. 1. Getting into space …
Rocket speeds of 11.2 km/s or km/h to escape Earth’s gravity
Acceleration speeds must be carefully calculated based on weight to avoid damage to ship
Altitude of 242 km above earth
Velocity of about km/h to stay in orbit

4. fuel Almost all fuel used during launch
Once in orbit, fuel is only used for short spurts to alter course
Solar is new option

5. 2. Living in anti-gravity
Things in space in continuous free fall so things inside them have a feeling of weightlessness
Microgravity environment
Everything must be secured

6. Health effects
Things in our body require gravity to assist in their function
Blood pools in the upper body – puffy face
Muscle atrophy – bird legs
They must exercise at least 2 hrs a day to prevent muscle loss
Bone loss up to 2% per month
Radiation from the sun – space vehicles must have special protective shields

7. 3. Water and food Water Food Every drop is recycled
Astronauts use special soap and shampoo
Food
Need creative ways to have enough and not take up space
Low maintenance

8. Hygiene
Shampoo
Bathroom
Sleeping
Nail clippers

9. International space station
Launched in 1998
50 shuttle launches and 150 space walks to complete
Can be seen with unaided eye as bright star across night sky
200 people from 15 countries have visited

10. iss

11. ISS

12. Space junk
video

13. Learning goals revisited
I will be able to identify the risks associated with space travel!