Unit E – Space Exploration Lesson 4-8 – Chapter 4 topics 4.1 - The Risks & Dangers of Space Exploration 4.2 - Canadian Contributions to Space Exploration & Observation 4.3 - Issues Related to Space Exploration

A. Accidents 1967 – fire broke out during training on Apollo 1, 3 died 1986 – space shuttle Challenger exploded on lift off, 7 died slide 1 of 5

space shuttle Columbia exploded on re-entry, 7 died 2003 – space shuttle Columbia exploded on re-entry, 7 died both Russians and Americans lost, losing Mars probes huge amounts of money and years of work slide 2 of 5

B. Dangers of Space Travel risk of being hit by debris risk of exposure to radiation in space re-entry is very dangerous and must be perfect too shallow an angle and the shuttle bounces off the atmosphere too steep an angle and the shuttle burns up slide 3 of 5

C. Space Junk large and small debris can fall off spacecraft or be left behind eg) dead satellites, paint junk and micrometeoroids might be small but are traveling at enormous speeds (20,000 km/h) and can have disastrous effects on a space shuttle or satellite slide 4 of 5

most space junk burns up if it re-enters Earth’s atmosphere some old satellites can re-enter and the pieces fall to Earth posing a risk slide 5 of 5

Canadian Contributions to Space Exploration & Observation 4.2 Canadian Contributions to Space Exploration & Observation

A. Technology Canada developed and built robotic arms for the space shuttle called Canadarm 1 and Canadarm 2 controlled by remote control slide 1 of 3

Canadarm 2 has computer-controlled fingers used to launch and retrieve satellites, fix the Hubble Space Telescope and put together modules of the International Space Station Canadarm 2 has computer-controlled fingers provided technology for the Mars Pathfinder mission slide 2 of 3

B. Canadians in Space Marc Garneau – 1st Canadian in space in 1984 Roberta Bondar – 1st Canadian woman in space in 1992 Chris Hadfield – 1st Canadian to walk in space in 2001 slide 3 of 3

Issues Related to Space Exploration 4.3 Issues Related to Space Exploration

A. Should Space be Explored? con – there are lots of issues on Earth that haven’t been resolved eg) poverty, hunger, pollution, disease pro – space may offer some solutions to our problems slide 1 of 4

B. Resources in Space there is a great demand for natural resources on Earth resources in space may help us satisfy our energy needs asteroids contain mineral resources eg) Fe, Au, Pt slide 2 of 4

moon could provide materials for fuel obtaining construction materials for space exploration from space would dramatically reduce the price moon could provide materials for fuel maybe could colonize other areas of the solar system, like Mars slide 3 of 4

C. Issues political issues refer to ownership, rights and laws ethical issues refer to fairness, right vs wrong, determining the beneficial uses environmental issues refer to protection and conservation of space and Earth slide 4 of 4

Assignment Worksheet 9