HELP. Displays this help screen. To exit, click one of the
Help buttons located at the top and bottom of this screen.
Choose Earth's tilt from 0 (untilted) to 90 (rolling on its side like
Uranus) to 180 (rotating backwards like Venus). Here are the tilts of
all of the planets in the Solar System for comparison.
|| Tilt (in degrees)
Earth's spin axis (red arrow with N in Figure) is tilted by 23.5
degrees from perfectly perpendicular to its orbit (dashed circle). As
Earth moves along its orbit, different parts of the planet face the
Sun. The North pole of the spin axis points more toward the Sun
during some times (June, summer in the North) and more away from it
at other times (December, winter in the North).
Choose the latitude of your location on Earth. This angle varies from
90 degrees South (-90 degrees) at the South Pole to 90 degrees North
at North Pole.
Different computers run java at different speeds. The animation
speed varies by about a factor of twenty from "Slow" to "Lightening
SUBMIT FORM. See the seasons change from Earth's perspective.
LOAD DEFAULTS. Resets to the Earth's correct 23.5 degree tilt and
the latitude of the University of Maryland.