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Transcript of Spectacular Sky
Many celestial objects are not visible without
the aid of a telescope....
because the universe is so big.
Milky Way Galaxy
What galaxy are we located in and where are we in the galaxy?
- In the Milky Way
2/3's out in one of
A spiral shaped galaxy
13.7 billion years old.
More than 4.6 billion years old
4.6 billion years old
4.4 billion years old
How did we learn about the night sky?
Chinese astronomers around 1300 B.C. noticed stars that moved across the sky in patterns
created a yearly calendar.
LATER...the Greeks got into the act.
...and by the 1600's Galileo had perfected the telescope to observe Jupiter's moons.
What can we see in
Only those stars nearest to Earth...
but trillions of stars are in the universe-
that's 1 with 12 zeros!
Light that reaches Earth from Alpha
Centauri left that star more than 4 years
Alpha Centauri is our closest star, and it's bright.
Betelguese is far away.. but it's big and bright.
See if you can find Sirius and Polaris.
From Big to Small.....in a manner of speaking...
Our Solar System
-Has 1 star - our Sun
-Planets are held orbit by gravity
Rocky planets are separated from Jovian planets by an asteroid belt
-shines by reflected light from the Sun
-phases are from its revolution around Earth
Tonight we hope you find what you are looking for- in the wonders of the universe and our small part of the sky!