The Sky

SubjectImage TypeSourceDescription
Earth daysjpgGimp/PalenDiagram of the difference between the solar and the sidereal day.
Earth phasejpgGimp/PalenDiagram of the phases of the Earth as seen from the Moon.
EclipsejpgGimp/PalenThe inclination of the Moon's orbit to the ecliptic.
Equator Dec'sjpgGimp/PalenThe range of declinations visible from the Equator.
North Dec'sjpgGimp/PalenThe range of declinations visible from the North Pole.
Seattle Dec'sjpgGimp/PalenThe range of declinations visible from Seattle
South Dec'sjpgGimp/PalenThe range of declinations visible from the South Pole
Moon phasesjpgGimp/PalenThe phases of the moon.
Neap TidejpgGimp/PalenDiagram of neap tide.
Spring TidejpgGimp/PalenDiagram of spring tide.
New CrescentjpgGimp/PalenNew crescent moon. For observers in the North, a new crescent is always lit on the right side.
The SkyjpgGimp/Palen"Map" of the sky, with the ecliptic, the celestial equator, the Sun's motion over the course of the year, etc.

Solar System

SubjectImage TypeSourceDescription

Stars

SubjectImage TypeSourceDescription
HR Diagramgif?A schematic HR Diagram.
P-P ChaingifGimp/PalenThe proton-proton chain for forming Helium from Hydrogen.

Stellar Evolution

SubjectImage TypeSourceDescription

Galaxies

SubjectImage TypeSourceDescription
Distance LadderjpgGimp/PalenDistance ladder...
Rotation CurvejpgGimp/PalenSchematic rotation curves of 3 types of objects.
21 cm Milky Wayjpg?21 cm map of Milky Way
Radio Milky Wayjpg?Radio continuum Milky Way
IR Milky Wayjpg?Infrared Milky Way
Visible Milky Wayjpg?Visible Milky Way
X-Ray Milky Wayjpg?X-Ray Milky Way

Cosmology

SubjectImage TypeSourceDescription

Activities Labs Homeworks Movies Main Page Links of Interest Exams Feedback