Music of the Stars: II. The Hardest Thing

The hardest thing, I think by far, is how we analyze

Spectra - light broken up into its component colors

It's so abstract, so removed from the actual object

We're studying. See, chemists study chemicals in the

Lab. Biologists study life on Earth. But astrophysicists

Can't grab a piece of a galaxy and put it in a laboratory

We have to study a picture of the thing and then

Analyze the light that comes from it. Nearly everything

We know about our universe comes through the

Analysis of light. It's all just light and ninety-nine

Percent of it happens to be invisible to the naked eye