HISTORY
Excellent history of astronomy up to the time of Galileo
New interactive history of cosmology website from the American Institute of Physics
Click below for some wonderful biographies; here is the main index of the website.
Ptolemy
Hipparchus
Copernicus
Kepler
Brahe*
Galileo
Newton
Halley
*Click on the link "Tycho Brahe's Nose" for a more "colorful" Tycho Brahe page, including his nose, his pet moose and his death.
SCALE AND MOTION
Refresher on Scientific Notation
Here's an actual SCALE MODEL of the solar system that was constructed along Route 1 in Maine. The scale is 1 mile=1 AU. (1 AU = the distance from the Earth to the Sun = 93 million miles = 150 million km.) At this scale, the nearest star would be beyond the real orbit of the moon!
Explanation of distances in astronomy, and parallax
Schematic of what retrograde motion looks like. Double-click the image to start.
What it really looks like, shown here when Jupiter and Saturn happened to be located in the same part of the sky.
Retrograde Motion - Ptolemy's explanation
Retrograde Motion - Copernicus' explanation
An Interactive applet for Kepler's Laws, Retrograde Motion, Inner Planet Phases, and more...
PHYSICAL PRINCIPLES
Transverse and Longitudinal Waves
Doppler effect in 30 mph Volvo from Exploratorium
The Rutherford Experiment:
if
positive charge were evenly spread throughout an atom
if
the positive charge were concentrated in a tiny nucleus
IMAGES, STARS & SKY
The Globe at Night - 2010, a worldwide effort to map and raise awareness of light pollution
Hubble Space Telescope Latest Information
SKYLIGHTS: Weekly Astronomy News & Images
Stars: Portraits of Stars and Their Constellations
Sky & Telescope Interactive Star Charts
You are visitor
at www.digits.com
Back to Astronomy 330 home page
Back to Astronomy 330 syllabus.