110 likes | 223 Views
Astronomy and Cosmology week 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)
E N D
Astronomyand 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
Introduction to Space and Time Naked eye astronomy Constellations Time: Sky changes (Starry Night) • Through the day, due to Earth’s rotation • Through the year, due to Earth’s orbit • Through the seasons, due to Earth’s tilt • Through the epochs, due to precession Space • celestial sphere • Equinoxes, solstices
Naked eye astronomy What you see depends on where you are, in space, time and culture.
Time: Sky changes (Starry Night) • Through the day, due to Earth’s rotation • Through the year, due to Earth’s orbit • Through the seasons, due to Earth’s tilt • Through the epochs, due to precession
Celestial sphere Altitude from horizon Declination from equator (latitude) Azimuth from North RA from VE (longitude)