slide1
Download
Skip this Video
Download Presentation
Intro

Loading in 2 Seconds...

play fullscreen
1 / 19

Intro - PowerPoint PPT Presentation


  • 157 Views
  • Uploaded on

Objective 03/26/12. Identify the units of a calendar. Intro. How do scientists study space?. Astronomy History. Astronomy History. Astronomy. The study of the universe. Astronomy History. Calendar Year . Based on the observation of objects in our solar system

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Intro' - tyson


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1
Objective 03/26/12

Identify the units of a calendar.

Intro

How do scientists study space?

astronomy history1
Astronomy History
  • Astronomy
  • The study of the universe
astronomy history2
Astronomy History
  • Calendar
  • Year
  • Based on the observation of objects in our solar system
  • Time required for Earth to orbit once around the sun
    • 365.25 days
astronomy history3
Astronomy History
  • Month
  • Day
  • Amount of time required for the moon to orbit once around Earth
    • ~ 28 days
  • Time required for Earth to spin once on its axis
    • 24 hours
astronomy history4
Astronomy History
  • Rotation (rotate)
  • Revolution (revolve or orbit)
  • Spin on an axis
  • Go around an object
astronomy history5
Astronomy History
  • Early Astronomers
  • Could only observe the universe with their eyes and minds
  • Thought universe had only Sun, Moon, and planets, with stars at the edge of universe
astronomy history6
Astronomy History
  • Ptolemy
  • 140 C.E.
  • Greek Astronomer
  • Geocentric
    • Earth at center of universe
  • This theory lasted 1,500 years!
american history
American History
  • Copernicus
  • 1543
  • Polish Astronomer
  • Heliocentric
    • Sun is the center of the universe
astronomy history7
Astronomy History
  • Tycho Brahe
  • Late-1500s
  • Danish Astronomer
  • Invented several large tools to study the universe and took many precise measurements and data
  • Believed in different geocentric universe
astronomy history8
Astronomy History
  • Johannes Kepler
  • 1609
  • Brahe’s assistant
  • Used Brahe’s data to prove heliocentric universe AND planets orbit in elliptical orbit
  • Developed the 3 laws of planetary motion which are still used today
astronomy history9
Astronomy History
  • Galileo Galilei
  • 1609
  • First person to use a telescope to observe object’s in space
  • Discovered:
    • Moon has craters and mountains
    • Four of Jupiter’s moons
    • Sunspots on the Sun
astronomy history10
Astronomy History
  • Isaac Newton
  • 1687
  • Discovered the law of gravity
    • All objects in the universe are attracted to each other
  • Explains the orbits of planets around the Sun
astronomy history11
Astronomy History
  • Edwin Hubble
  • 1924
  • Proved other galaxies existed beyond our galaxy
  • The universe is much MUCH bigger than previously thought
slide19
Objective 03/26/2012

Identify the units of a calendar.

Outro

How can you study space?

ad