chap10 space
TRANSCRIPT
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CHAPTER 10: SPACE
EXPLORATION (Penerokaan
Angkasa Lepas)
10.1 Development In The Field of
Astronomy & Space Exploration
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Development In The Field Of
Astronomy
Astronomythe field of study aboutnatural objects in the sky (the Sun, moon,stars, earth etc)
Ancient astronomers from the Middle East,China & India had made observation aboutthe movements of the Sun, stars & Moon.
Ancient astronomers like the Greeks hadtried to explain the movements of planets& stars.
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Astronomer Year Contribution
Aristotle 384-322 BC Suggested that the Earth is
spherical in shape & not flat
Aristarchus 200 BC The 1stastronomer to suggest
that the Earth rotates on its axis &
moves following its own orbit
Hippoarchus 100 BC Classified stars according their
brightnessClaudius
Ptolemy
120 BC Suggested that the Sun was the
centre of the Solar System
Nicholas
Copernicus
1473-1543 1stastronomer to suggest that the
Sun is the centre of the solarsystem
Galileo Galilei 1564-1642 Invented the 1stastronomical
telescope
Johannes
Kepler
1571-1630 Said that the Earths orbit is
elliptical in shape
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Astronomer Year Contribution
Isaac Newton 1642-1727 Introduced the law of gravity
Edmund Halley 16561743 Discovered Halley,s Comet
Albert Einstein 18791955 Advanced the idea about the
relationship between time, space &
energy
Karl Jansky 19051950 1stman to detect radio waves from
outer space with radio telescope
William Herschel 1781 Discovered Uranus
Johann G. Galle 1848 Discovered Neptune
Clyde W.
Tombaugh
1930 Discovered Pluto
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Development In Space Exploration
Refer Figure 10.1 Some Important Events In SpaceExploration on page 184 in the textbook
(a) 1957
(b) 1969
(c) 1973
(d) 1984
(e) 1986
(f) 1989 -
(g) 1990
(h) 1996
(i) 2000 -
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Application Of Technology Related
To Astronomy
Space telescopee.g The Hubble SpaceTelescopeis used to study of the Solar
System, the stars & the galaxies
Radio telescopesare used to detect &pick up radio waves from the outer space
Rocketsare used to launch spaceships
& satellites Space shuttlese.g. Columbia &
Discovery that can carry astronauts as
well as launch satellites to outer space
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Satelliteshave various uses such as for
telecommunication & weather forecast.
Spaceships & space probes/space robotshave been launched to study the
planets.e.g Mars & Saturn
Space stationsthe place to carry outresearch/experiments. E.g Skylab, Mir &
International Space Station
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Applications of Space Technology
In Everyday Life
Telecommunicationable to sendinformation through TV, radios,
telephones, telexes, the internet etc
Weather forecasting Locating & resourcessatellites are used
to locate the areas on the Earth which are
rich with petroleum, coal & natural gas. Navigationof ships & aeroplanes
National defence(security)
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Alloy & medicine manufacturingare best
prepares in a vacuum Solar panelssolar cells are used to
operate electronic equipments
Heat resistantmaterials Photography techniques
Forestry
Agriculture
Disaster management
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Possible Development In Space
Exploration In The Future
Space Colonies
Visit to the Moon & other planets
Solar power stations in space
Factoriesin space
Extraction of metalsfrom asteroids-Asteroids are rich in iron, nickel &
platinum.
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