the challenges of space travel
DESCRIPTION
Learning goals revisited I will be able to identify the risks associated with space travel!TRANSCRIPT
THE CHALLENGES OF SPACE TRAVEL
LEARNING GOALS REVISITED
• I will be able to identify the risks associated with space travel!
1. GETTING INTO SPACE …
• Rocket speeds of 11.2 km/s or 40 320 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 27 400 km/h to stay in orbit
FUEL
• Almost all fuel used during launch
• Once in orbit, fuel is only used for short spurts to alter course
• Solar is new option
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
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
3. WATER AND FOOD
• Water• Every drop is recycled
• Astronauts use special soap and shampoo
• Food
• Need creative ways to have enough and not take up space
• Low maintenance
HYGIENE
• Shampoo
• Bathroom
• Sleeping
• Nail clippers
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
ISS
ISS
SPACE JUNK
• video
LEARNING GOALS REVISITED
• I will be able to identify the risks associated with space travel!