Astronomy 104, Fall 2016, Sections 5-6-7-8.

These are introductory courses to astronomy, with more emphasis on active thinking than memorizing facts. The main points of this course are (1) a general understanding of astronomy, (2) what can be observed in the sky, (3) the Solar System in 103 / the stars and the Universe in 104.

ANNOUNCEMENTS
Look at the new set of grades!

In all classes and for all tests,

students need a new scantron # 16485,

one scantron for each class.


What's up in the sky?

 
The Sun.
There are quite a few sunspots now!

New Moon: Oct. 1 , First Quarter: Oct. 9,

Full Moon: Oct. 16, Last Quarter: Oct. 22.

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Mars and Saturn are up very early night only.

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News

1. Proxima Centauri, the closest star, has a planet.

2. Titan's (Saturn's largest moon's) rivers and channels are filled with liquid.

3. Important discovery: LIGO finally deteted gravitational waves from coalescing pair of black holes!

4. The New Horizon mission to Pluto keeps discovering surprises. Here is a list of the top ten explained.

After Pluto it is targeting another KBO.

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Interesting

A solar flare came inches from starting starting Word War III in 1967.

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Unusual events and objects

(Students might want to ask help in how to use the coordinates, ephemerids and finder charts.)

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