Astronomy and Cosmology week 1 - Thursday

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Astronomy and Cosmologyweek 1 - Thursday

• Star Date
• Your surveys results and discussion
• Your Web-X posts
• Your minilecture sign-ups BREAK
• Introduction to space and time
• Workshop Planispheres Starry Night
• Workshop Space and Time (go outside if clear)
• Tomorrow and next week

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Introduction to Space and Time

• Naked eye astronomy
• Constellations
• Time Sky changes (Starry Night)
• Through the day, due to Earths rotation
• Through the year, due to Earths orbit
• Through the seasons, due to Earths tilt
• Through the epochs, due to precession
• Space
• celestial sphere
• Equinoxes, solstices

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Naked eye astronomy
What you see depends on where you are, in space,
time and culture.
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Constellations help orient us
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Time Sky changes (Starry Night)

• Through the day, due to Earths rotation
• Through the year, due to Earths orbit
• Through the seasons, due to Earths tilt
• Through the epochs, due to precession

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Sky changes through the day, due to Earths
rotation
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Sky changes through the year, due to Earths orbit
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Sky changes through the seasons, due to Earths
tilt
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Sky changes through the epochs, due to precession
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Celestial sphere
Altitude from horizon Declination from equator
(latitude) Azimuth from North RA from VE
(longitude)
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Equinoxes and solstices