Measurement, Time, & The Scale of the Universe

The background music here is really annoying, but he does make quick work of the basic definitions.

If your math skills are good (think sin, cos, tan…) you may be interested in this definition of what a parsec is…

Cosmic Distances & Light Speed

The Scale of the Universe
The Scale of the Universe Interactive Applet

Light, Optics, and Telescopes


Atmosphere & Optical Telescopes

The following link will take you to a good history of telescopes.
Telescopes from the Ground Up

The next clip is from Orion (a telescope company) talking about how a telescope works.

This clip talks about the aperture of a telescope.

This clip talks about the focal length and focal ratio when buying a telescope.

The Value of Space Exploration

While this video is old, it does a pretty good job outlining some key facts relating to the value of space exploration.

What is space exploration doing for you?

Included at the link below is a NASA Symposium on the value of space exploration hosted by the National Geographic Society.
The Value of Space Exploration (A National Geographic Society symposium)

What is Astronomy?

I hope you are as excited for this experience as I am. Please keep on top of the reading and I will do what I can to make classes engaging and overflowing with learning and growth opportunities. I believe that astronomy is not only the search for what is out there, but the search for what is inside each and every one of us. I will leave you with the quote I put at the opening of our prologue and a video clip from the late, great astronomer Carl Sagan.

“People say that what we’re all seeking is a meaning for life. I don’t think that’s what we’re really seeking. I think that what we’re seeking is an experience of being alive, so that our life experiences on the purely physical plane will have resonances within our own innermost being and reality, so that we actually feel the rapture of being alive.”
– Joseph Campbell from The Power of Myth

Carl Sagan – You Are Here (Pale Blue Dot)