Web Links for “Why is Hubble Important?”

Space Telescope Science Institute Resources

Images from Hubble

Adler Planetarium's What's Up in the Sky this Month?

NASA Educator Resource Center at Museum of Science and Industry

The following links appear in the lesson:

Piercing the Sky

Galileo's Refractor

Era of Early Refractors

Reducing Spherical Aberration in Lenses

Refraction through a Prism

Newton's Reflector

Herschel's 20-Foot-Long Reflector

Reflecting Telescopes

The Earl of Rosse and the Leviathan of Parsontown

Astronomy Picture of the Day

Why Stars Twinkle