Transcript Astronomy!!!!sec3x

Astronomy!!!!
Astronomical Unit
• 149 597 871 kilometers
• This is the average distance between the earth
and the sun
Light Year
• The distance traveled by light in one Earth
year
• This is a unit of length
Alice and Bob
• https://www.youtube.com/watch?v=iKTvBDZ8Os
• Why is it dark at night?
• https://www.youtube.com/watch?v=F2VOMn
VyY1s
• Is that star really there?
• Why are we looking through time when we
look at the stars at night?
Nebula
• Also called diffuse nebula. a cloud of
interstellar gas and dust
Stars
• A celestial body that generates light and other
radiant energy and consists of a mass of gas
held together by its own gravity in which the
energy generated by nuclear reactions.
Plasma.
• Any of the celestial bodies visible at night
from Earth as relatively stationary, usually
twinkling points of light.
Betelgeuse – taken with Hubble
Telescope
Documentaries
• https://www.youtube.com/watch?v=qcfN_HN4T
Vg
• National Geographic Hubble History (2009)
• https://www.youtube.com/watch?v=5vOU61yNZs
• Distances and Planets like ours
• http://www.msn.com/enca/news/photos/spectacular-photos-fromspace/ss-BBjBTyI?ocid=iehp#image=1
• Spectacular photos from space.
Necessities for Life
• http://www.space.com/25530-earthsizeexoplanet-kepler-186f-habitablediscovery.html
• http://www.nasa.gov/ames/kepler/nasaskepler-discovers-first-earth-size-planet-in-thehabitable-zone-of-another-star