space exploration

Information about space exploration

Published on January 21, 2008

Author: Teobaldo

Source: authorstream.com

Content

Viewing the Universe Chap. 26: Sect. 1:  Viewing the Universe Chap. 26: Sect. 1 Why is it important to us?:  Why is it important to us? Studying how stars shine may lead to improved or new energy sources. Astronomers may learn to protect us from potential catastrophes such as collisions with asteroids. We can learn more about the origin of the Earth and the formation of our solar system and other objects. Slide3:  Astronomy: scientific study of the universe Cosmology: the study of the origin, properties, processes and evolution of the universe Big Bang: Theory that the universe began about 14 billion years ago in a giant explosion. The explosion hurled matter in all directions Organization of the Universe:  Organization of the Universe Closest part to us is the solar system. It includes the sun, Earth, other planets and many smaller objects. The solar system is part of a galaxy. Galaxy: large collection of stars, dust and gas bound together by gravity What galaxy do we reside in? Measuring Distance:  Measuring Distance The universe is so large that our units of measurements are too small to measure it. Because of this we use… Astronomical Unit (AU): the average distance between the Earth and the sun; approximately 150 million kilometers Electromagnetic Spectrum:  Electromagnetic Spectrum Electromagnetic Spectrum: all of the wavelengths of electromagnetic radiation The human eye can only see radiation of wavelengths in the visible light range. Shorter wavelengths Longer wavelengths Telescopes:  Telescopes Telescope: an instrument that collects electromagnetic radiation from the sky and concentrates it for better observation. Optical telescopes: only collect visible light (these were the first telescopes) Who was the first person to use a telescope? Optical Telescopes:  Optical Telescopes Refracting Telescopes Telescope that uses a set of lenses to gather and focus light from distant objects. Lenses are clear objects that bend light . This process is called refraction. In this telescope, the light passes through the lens and is magnified by an eyepiece. One inconvenience of it is that the lens focuses different colors of light at different distances. Optical Telescopes (cont.):  Optical Telescopes (cont.) Reflecting Telescopes Uses a curved mirror to gather and focus light from distant objects. Light is reflected by a large curved mirror to a second mirror and then to the eyepiece, which is a lens that magnifies and focuses the image. The mirrors of these telescopes can be made very large without affecting the image. So…these telescopes can be made larger and gather more light than refracting telescopes. Space-Based Astronomy:  Space-Based Astronomy Spacecrafts that contain telescopes and other instruments have been sent to study distant objects. These are robotic spacecrafts (no humans aboard). Some methods for space-based astronomy are: Space telescopes Other spacecrafts Human space explorations Space Telescopes:  Space Telescopes Hubble Space Telescope: launched to collect electromagnetic radiation from objects in space Chandra X-ray Observatory: makes clear images using X-rays from objects in space Compton Gamma Ray Observatory: no longer in space but detected gamma rays from objects Space Telescopes:  Space Telescopes Spitzer Space Telescope: launched in 2003 to detect infrared radiation from objects in space James Webb Space Telescope: will be launched in 2011 and will detect infrared radiation Galaxy M81 Debris circling the star Fomalhaut nebula IC 1396 Nebula: cloud of gas and/or dust newborn star: HH46-IR Other Spacecraft:  Other Spacecraft Used since early 1960’s. In 1977, Voyagers 1 & 2 investigated Jupiter, Saturn, Uranus, Neptune and their moons. Galileo (‘95-2003): orbited around Jupiter and its moons. Cassini-Huygens: studied Saturn and its moon, Titan. Voyager 1 Human Space Exploration:  Human Space Exploration Crewed spacecrafts haven’t gone beyond the Earth’s moon. The first humans went to space in the 1960’s. The loss of Challenger (1986) and Columbia (2003) have increased awareness of the risks of human space exploration. Colombia ready for launch in 2001. It was the first shuttle to orbit the Earth in 1981. Bonus Benefits:  Bonus Benefits Satellites provide weather information and broadcast television signals. Making objects smaller and lighter for space exploration has led to improvement in electronics such as radios and televisions. Studying the flow of fuel in rockets has helped improve heart pumps.

Related presentations


Other presentations created by Teobaldo

week 12
07. 05. 2008
0 views

week 12

Wies baden Investors Nov2004
02. 05. 2008
0 views

Wies baden Investors Nov2004

unit 11
02. 05. 2008
0 views

unit 11

Beijing 2008 WBB L S Ng report
30. 04. 2008
0 views

Beijing 2008 WBB L S Ng report

417 gbrewer 051
24. 04. 2008
0 views

417 gbrewer 051

WCIT 2004 pres112603
22. 04. 2008
0 views

WCIT 2004 pres112603

Rotimi Oyekanmi AVCA 2006
21. 04. 2008
0 views

Rotimi Oyekanmi AVCA 2006

donati1
18. 04. 2008
0 views

donati1

VOF Professional2005
16. 04. 2008
0 views

VOF Professional2005

VUS02 03
10. 01. 2008
0 views

VUS02 03

tr31
11. 01. 2008
0 views

tr31

fgm threat mdg hr
11. 01. 2008
0 views

fgm threat mdg hr

rome
14. 01. 2008
0 views

rome

Empowering Individuals
14. 01. 2008
0 views

Empowering Individuals

astrophel sonnet
15. 01. 2008
0 views

astrophel sonnet

Renault F 1 and Symantec
16. 01. 2008
0 views

Renault F 1 and Symantec

Can a computer game make you cry
21. 01. 2008
0 views

Can a computer game make you cry

BambooMatBoard
23. 01. 2008
0 views

BambooMatBoard

6Perceptionenhanced
14. 01. 2008
0 views

6Perceptionenhanced

16 Atmospheric Evolution
25. 01. 2008
0 views

16 Atmospheric Evolution

RichardEckard
28. 01. 2008
0 views

RichardEckard

cellular
04. 02. 2008
0 views

cellular

mind body2
05. 02. 2008
0 views

mind body2

bioinfo metabolomics fluxomics
06. 02. 2008
0 views

bioinfo metabolomics fluxomics

brooklyn br
07. 02. 2008
0 views

brooklyn br

464 Fab Slides Ch07
18. 02. 2008
0 views

464 Fab Slides Ch07

linq alti online
21. 02. 2008
0 views

linq alti online

CommunicationsFinal
22. 02. 2008
0 views

CommunicationsFinal

Gericault Delacroix
25. 02. 2008
0 views

Gericault Delacroix

Sectio3notes
20. 01. 2008
0 views

Sectio3notes

LL 200711 Holiday Stress Handout
11. 03. 2008
0 views

LL 200711 Holiday Stress Handout

IGF Hyd 2008
12. 03. 2008
0 views

IGF Hyd 2008

2007 Corporate Package v1
15. 03. 2008
0 views

2007 Corporate Package v1

Ch1 lesson plan
19. 03. 2008
0 views

Ch1 lesson plan

TransmissionFundamen tals
24. 03. 2008
0 views

TransmissionFundamen tals

trv online
27. 03. 2008
0 views

trv online

BBQPlatform
28. 03. 2008
0 views

BBQPlatform

towards smart home appliances
10. 04. 2008
0 views

towards smart home appliances

JimmyLeach
23. 01. 2008
0 views

JimmyLeach

GENEProject
13. 02. 2008
0 views

GENEProject

nh print makers
10. 01. 2008
0 views

nh print makers

A CHAPTER13
12. 02. 2008
0 views

A CHAPTER13

The case for sports page ads
23. 01. 2008
0 views

The case for sports page ads

SSA Medicare D
04. 02. 2008
0 views

SSA Medicare D

JA FÃredrag 070921
07. 02. 2008
0 views

JA FÃredrag 070921

yun liu
31. 01. 2008
0 views

yun liu

media 7679 en
30. 01. 2008
0 views

media 7679 en

Cycle of Abuse Notes
17. 01. 2008
0 views

Cycle of Abuse Notes

50001 2005 Study REVISED
21. 01. 2008
0 views

50001 2005 Study REVISED

Lec10 network3
04. 02. 2008
0 views

Lec10 network3

LabGlass ebk
09. 01. 2008
0 views

LabGlass ebk

dec2003 2
07. 04. 2008
0 views

dec2003 2

N6BV Boxboro 2004
13. 02. 2008
0 views

N6BV Boxboro 2004

developers
17. 01. 2008
0 views

developers

LS08AcidSulf HM
22. 01. 2008
0 views

LS08AcidSulf HM

26 january10 2006 presentation
15. 02. 2008
0 views

26 january10 2006 presentation

20050412Fulbright
10. 01. 2008
0 views

20050412Fulbright

Sustainable Landscapes Hartin
22. 01. 2008
0 views

Sustainable Landscapes Hartin