Sky and SpaceSky and Space

Lecture Outline # 9Lecture Outline # 9

History of AstronomyHistory of Astronomy

EratosthenesEratosthenes

PrecessionPrecession

Ptolemy’s EpicyclesPtolemy’s Epicycles

Retrograde MotionRetrograde Motion

CopernicusCopernicus1473-15431473-1543

Eccentricity – Kepler’s DiscoveryEccentricity – Kepler’s Discovery

Kepler’s Second Law of Kepler’s Second Law of Planetary MotionPlanetary Motion

Galileo GalileiGalileo Galilei1564 - 16421564 - 1642

Galileo’s Galileo’s observations observations of Jupiter’s of Jupiter’s

moonsmoons

Phases of VenusPhases of Venus

Sir Isaac NewtonSir Isaac Newton1642-17271642-1727

Effect of GravitationEffect of Gravitation

Locations in SpaceLocations in Space

Stars “Rotating” Around PolarisStars “Rotating” Around Polaris

Locating the North StarLocating the North Star

ConstellationsConstellations

What is the Plane of the Ecliptic?What is the Plane of the Ecliptic?

Earth Position at Vernal EquinoxEarth Position at Vernal Equinox

Earth’s MoonEarth’s Moon

Motions of the MoonMotions of the MoonEarth/moon systemEarth/moon system

Synchronous Synchronous RotationRotation

Gravitational PullGravitational Pull

Phases of the MoonPhases of the Moon

Synodic vs. Sidereal MonthSynodic vs. Sidereal Month

Partial vs. Total Solar EclipsePartial vs. Total Solar Eclipse

Partial vs. Total Lunar EclipsePartial vs. Total Lunar Eclipse

Conditions Needed for EclipseConditions Needed for Eclipse

Moon Shadow Moon Shadow Total Solar EclipseTotal Solar Eclipse

Solar Eclipse across AfricaSolar Eclipse across AfricaJune 2001June 2001

Moon ExplorationMoon Exploration

Moon FormationMoon Formation

Geology of the MoonGeology of the Moon

Moon’s SurfaceMoon’s Surface

Crater FormationCrater Formation

TerraTerra

MareMare

RegolithRegolith