Space Studies Tuesday: Lesson Five: Planetary Orbits

Video day today!

First, a look at orbits:

LaGrange points are fun.  Many SF writers use them for space stations.  I have one at L5 in my rescue Sisters universe; it almost gets destroyed in "These Three" in Infinite Space, Infinite God II.

Here's how the L1 point looks.  The lesson talks about the SOHO satellite and its uninterrupted view of the sun.


But more cool than that are the images:


Here's the WMAP, and why it's important, as explained in verse by Charles Osgood. 



And a quick video of the map it's made:



Here's how the LaGrange points 4 and 5 look: