Final Topics in Space Science SCI 2201 Solar and Lunar Eclipse & Reason for the Seasons.

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Presentation transcript:

Final Topics in Space Science SCI 2201 Solar and Lunar Eclipse & Reason for the Seasons

Meteor Showers On most moonless nights, you’ll see 4 or 5 meteors per hour. Major annual meteor showers are named after constellations –Perseids Jul 17-Aug24 –Leonids Nov 14-21

Comets

Comets – icy visitors from beyond the solar system Dirty snowballs Some are captured in a regular orbit about the Sun –Haley’s, Hale Bop Kuiper belts –Just beyond Pluto Oort cloud –1000X beyond Pluto

Moon Patterns Moon moves east to the East with respect to the Sun by about one diameter per hour Counterclockwise if viewed from above Moon completes phase cycle in 29.5 days Time of “moon rise” grows later each day The Moon rotates and revolves in the same length of time, 27.3 days.

Phases of the Moon link link

Eclipse When either the Sun or the Moon crosses into the shadow cast by the other, an eclipse occurs.

Umbra: Inner core of total darkness Penumbra: Outer, partial shadow

Lunar Eclipse Moon passes through the shadow of the Earth.

Types of Lunar Eclipses

Solar Eclipse Earth passes through the shadow of the Moon.

Types of Solar Eclipses

Baily’s Beads

Diamond Ring

Solar Corona

Solar Prominences

Reason for the Seasons

Prime Meridian: Greenwich, England

Celestial Sphere

Angular Measurement

Final Topics in Space Science SCI 2201 Solar and Lunar Eclipse & Reason for the Seasons UT Astronomy Course: Great link!!!Great link!!! Fred Espenak's Eclipse Home PageEclipse Home Page