Space Exploration (2) - ISS
Transcript of Space Exploration (2) - ISS
Learning Objectives
• Have a high level understanding of the International Space Station (ISS)
• Examine some of the effects of Space on the Human Body
• Describe the benefits of human activity in space
ES08 examine some of the current hazards and benefits of space exploration and discuss the future role and implications of space exploration in society
PW04 research and discuss a technological application of physics in terms of scientific, societal and environmental impact
The escape velocity of Earth is the
speed at which a free object must travel to escape into space from a
planet’s gravitational pull..
Earth’s escape velocity is 11.186 km/s.
There are two main types of fuel used in Rockets - solid and liquid.
Solid fuel rockets are simple and reliable, once ignited there’s no stopping them, but
can’t be throttled to control thrust.
Liquid fuel rockets provide less raw thrust, but can be controlled, allowing astronauts to regulate the speed of a rocket, and adjust the
propellant valves to turn the rocket off and on. Examples of liquid fuel include liquid
oxygen (LOX) and liquid hydrogen.
Until its retirement in 2011 the shuttle ran 133 mission
which helped to build the ISS and served as the main form
of transport for astronauts and ISS supplies.
Living in Space….International Space Station (ISS)
1998 - Launched into spaces Nov 20th
2000 - First Crew arrived Oct 31st
2011 - ISS completed
2020 - over 250 people from 18 countries have visited the ISS
The ISS flies at an average altitude of 400 kilometers above Earth
It circles the globe every 90 minutes at a speed of about 28,000 km/h.
Hazards of Life on the ISS
• Lift Off
The space shuttle program was retired in July 2011 after 135
missions, including the catastrophic failures of Challenger in 1986 and
Columbia in 2003 that killed a total of 14 astronauts.
The Apollo Program was re-engineered after the death of 3
astronauts during the testing of the Apollo 1
Hazards of Life on the ISS
• Micro-gravity effects an Astronauts…..
Bone Density
Muscle
Circulation
Eyesight
Hazards of Life on the ISS
• Space Debris
• Micro-meteorites
• Extreme Temperature
• Space Vacuum
More than 500,000 pieces of
debris, or “space junk,” travelling
at 17,500mph are tracked as they
orbit the Earth
Small piece of orbital debris can
easily damage a satellite or a spacecraft.