Astronomy 104, Fall 2017, 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.


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 is very quiet now.

First Quarter: Nov. 26, Full Moon: Dec. 3,

Last Quarter: Dec. 10, New Moon: Dec. 18


Uranus and Neptune are up all night.



1. LIGO's sixth gravitational wave detection:

(Five were black hole mergers and one was a neutron star binary.)

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

3. The New Horizon mission to Pluto keeps discovering surprises.

Here is a list of the top ten explained.


Unusual events and objects

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