Resources for individual classes
Before the second class (September 25)
• Please read the following Cosmicomics stories:
-- A Sign in Space
-- All at One Point
After reading A Sign in Space, please watch or read these materials:
“Situated in the external zone of the Milky Way, the Sun takes about two hundred million years to make a complete revolution of the galaxy.”
Where Are We?
Neil DeGrasse Tyson zooms out to show us our Cosmic Address.
After reading All at One Point, please watch or read these materials:
“Through the calculations begun by Edwin P. Hubble on the galaxies’ velocity of recession, we can establish the moment when all the universe’s matter was concentrated in a single point, before it began to expand in space.”
Read about Edwin Hubble at Wikipedia.
Also read about Henrietta Swan Leavitt, who was nominated to share the Nobel Prize with Hubble, but who died before their work was picked was picked for the prize.
About that Big Bang thing,
How do we know the universe is expanding?
(You will notice that I am fond of questions that begin with "How do we know...".)
••••••
We might have time to begin talking about electromagnetic radiation (EMR), so if you have time,
Read just the first couple of paragraphs to get an overview, then as much as interests you.
Under Properties, see the first animation of EMR.
• Here's a blurry, but very informative overview of all things that EMR means,
