A Quick Tour of Saturn, Cassini-style

In a previous post about my previous Twitter location of “Jumping between Janus and Epimetheus”, I used a photo essay to explain what that location meant. (I am still working on the GeoGebra interactive for that post.)

Today, NASA published a sequence of videos, compiled between 2004 and 2010, showing Cassini’s views of Saturn as it approached and orbited the planet. The video is part of a new IMAX film called Outside In.

Incredible! I hope you enjoy.


Jumping between Janus and Epimetheus

If you had a time machine that only let you spend one hour in a different time, what date would you go to?

January 21, 2006±4n at 02:24:57 UTC








The next six figures, which are being constructed, will reveal the educational worthiness of “Jumping between Janus and Epimetheus”. They will follow soon.

Education and the home of Stefras

About a week ago, I changed the location I claimed to be at in my online profiles. Most of my profiles now say I am from “Alberta, Canada”, which I am; some say that “The World is my Classroom”.

Just changing my location attracted a whole wave of followers. This is evidence that people do in fact read your profiles and pay attention to your location.

My profiles all used to say that I was “Jumping between Janus and Epimetheus”. Several astronomers caught on to the reference, but I thought I might show the rest of you what I was saying, and let you decide how it is an opening to education.


Laughlin, Greg. (2005-2007.) Systemic: Characterizing Extrasolar Planetary Systems. http://oklo.org/. Relevant pages mirrored on my Teaching Resources site.

Nicholson, Philip D., Hamilton, Douglas P., Matthews, Keith, and Yoder, Charles F. (1992.) New observations of Saturn’s coorbital satellites. Icarus 100 (1992) 464-484. http://www.astro.umd.edu/~hamilton/research/reprints/NicHam92.pdf.

The Planetary Society. (date unspecified.) The orbital dance of Epimetheus and Janus. Space Topics: Saturn. http://www.planetary.org/explore/topics/saturn/janus_epimetheus_swap.html.

Tiscareno, Matthew S., Thomas, Peter C., and Burns, Joseph A. (2009.) The rotation of Janus and Epimetheus. Icarus 204 (2009) 254–261. http://www.ciclops.org/media/sp/2010/6288_14827_0.pdf.

This post is part of my Science (Biology) week contribution, the fifth activity of the 30 Days to Kick Start Your Blog Teacher Challenge and the Post a Week 2011 Challenge.