Chapter 26 ASTRONOMY THE SCIENTIFIC STUDY OF SPACE
- Slides: 27
Chapter 26 ASTRONOMY THE SCIENTIFIC STUDY OF SPACE / THE UNIVERSE.
Galactic address Planet Star The Sun Star System/Galaxy The Milky Way Galactic Group Local Group Galactic Supercluster Virgo Supercluster
GALACTIC ADDRESS
Measuring distances in the Universe • Astronomical Unit (AU) = 150 million km ( = 149, 597, 870. 66 km ) – The average distance from the EARTH to the SUN. • Light year = 9, 460, 700, 000 km ( = 9. 4607 x 1012 km ) This is based on the speed of light = 186, 000 mi/s = 300, 000 m/s - The distance that light travels in one year. • Parsec = 3. 26 light years = 19 trillion miles.
Astronomical Distances and Scales http: //htwins. net/scale 2/
Units of Distance • Astronomical Unit – The average distance from Earth to the sun ~ 150, 000, 000 meters • Light Year – The distance light travels in 1 year ~ 9, 500, 000, 000 meters
Powers of 10 •
Scientific Notation • Step 1: Find decimal point (3000 = 3000. 0) • Step 2: Move decimal point to where it is directly to right of first non-zero digit. Count the number of spaces the decimal point moves • Step 3: Write down the new number with x 10 on the end, put the number of spaces the decimal point moved at the top right corner of the x 10 (it is a positive number if point moved left and it is a negative number if point moved right)
Examples •
Looking at distant objects is like looking back in time.
Observing space • The electromagnetic spectrum represents different types of energy, each having different wavelengths, traveling at the speed of light. Link
Telescopes REFRACTING REFLECTING Optical telescope Uses lenses to bend light (refraction) Optical telescope Uses a curved mirror (reflection) to gather and focus light Problems: *Focuses different colors of light at different distances. *Ability to see distant objects is based on the size of their objective lens. Advantages: *Can be made larger, can gather more light, can see more distant/fainter objects. *Less distortion *Eliminates color differences
National Radio Astronomy Observatory (NRAO) • Green Bank, West Virginia
Robert C. Byrd Green Bank Telesco (100 meters in diameter)
Keck Telescopes – 10 m OWL (Overwhelmingly Large Telescope) – 100 m - optical and near-infrared Only Proposed!
Gran Telescopio Canarias
Human Space Exploration National Aeronautics and Space Administration (NASA)
100, 000 Stars
Supernova in Messier 82
Ant Nebula Horsehead Nebula
Comet ISON
Solar Prominence
Uranus
Jupiter’s triple solar eclipse event
- Learning astronomy by doing astronomy
- Learning astronomy by doing astronomy answers
- Learning astronomy by doing astronomy activity 1 answers
- Origin of modern astronomy chapter 22
- Johannes kepler
- Information gathered during an experiment
- How is a scientific law different from a scientific theory?
- Definition of earth and space science
- Cartesian space trajectory planning
- Space junk the space age began
- Camera space to world space
- Cartesian space vs joint space
- Ndc to screen space
- The scientific study of language
- Social psychology is the scientific study of
- Herbert spencer introduction
- Scientific study of social behavior and human groups
- The scientific study of trees
- The scientific study of behavior and mental processes
- Finished files are the result of years of scientific study
- What is ergonomics
- Mendelian genetics vocab
- Hình ảnh bộ gõ cơ thể búng tay
- Slidetodoc
- Bổ thể
- Tỉ lệ cơ thể trẻ em
- Chó sói
- Tư thế worm breton là gì