ASTR Spring 2008 Joel E. Tohline, Alumni Professor 247 Nicholson Hall [Slides from Lecture02]

Simple Scale Model Light-travel TimeScale Model Earth’s circumference0.134 seconds Toy Ball: 23” Moon’s diameter0.011 s White Styrofoam Sphere: 2.0” Earth-Moon distance1.3 s 230” = 19 feet Sun’s diameter3.6 s 52 feet Earth-Sun distance8.3 min = 500 s 7308 ft = 1.4 miles

Simple Scale Model Light-travel TimeScale Model Earth’s circumference0.134 seconds Toy Ball: 23” Moon’s diameter0.011 s White Styrofoam Sphere: 2.0” Earth-Moon distance1.3 s 230” = 19 feet Sun’s diameter3.6 s 52 feet Earth-Sun distance8.3 min = 500 s 7308 ft = 1.4 miles

Simple Scale Model Light-travel TimeScale Model Earth’s circumference0.134 seconds Toy Ball: 23” Moon’s diameter0.011 s White Styrofoam Sphere: 2.0” Earth-Moon distance1.3 s 230” = 19 feet Sun’s diameter3.6 s 52 feet Earth-Sun distance8.3 min = 500 s 7308 ft = 1.4 miles

Simple Scale Model Light-travel TimeScale Model Earth’s circumference0.134 seconds Toy Ball: 23” Moon’s diameter0.011 s White Styrofoam Sphere: 2.0” Earth-Moon distance1.3 s 230” = 19 feet Sun’s diameter3.6 s 52 feet Earth-Sun distance8.3 min = 500 s 7308 ft = 1.4 miles

Simple Scale Model Light-travel TimeScale Model Earth’s circumference0.134 seconds Toy Ball: 23” Moon’s diameter0.011 s White Styrofoam Sphere: 2.0” Earth-Moon distance1.3 s 230” = 19 feet Sun’s diameter3.6 s 52 feet Earth-Sun distance8.3 min = 500 s 7308 ft = 1.4 miles

Simple Scale Model Light-travel TimeScale Model Earth’s circumference0.134 seconds Toy Ball: 23” Moon’s diameter0.011 s White Styrofoam Sphere: 2.0” Earth-Moon distance1.3 s 230” = 19 feet Sun’s diameter3.6 s 52 feet Earth-Sun distance8.3 min = 500 s 7308 ft = 1.4 miles

Assignment: “ Construct” Scale Model of the Solar System Sun is a basketball. Place basketball in front of Mike the Tiger’s habitat. Walk to Earth’s distance, turn around and take a picture of the basketball (sun). Walk to Jupiter’s distance, take picture of sun. Walk to Neptune’s distance, take picture of sun. Assemble all images, along with explanations, into a PDF document. How far away is our nearest neighbor basketball? Due via By 11:30 am, 25 January You may work in a group containing no more than 5 individuals, all of whom must be students in this class.

Assignment: “ Construct” Scale Model of the Solar System Sun is a basketball. Place basketball in front of Mike the Tiger’s habitat. Walk to Earth’s distance, turn around and take a picture of the basketball (sun). Walk to Jupiter’s distance, take picture of sun. Walk to Neptune’s distance, take picture of sun. Assemble all images, along with explanations, into a PDF document. How far away is our nearest neighbor basketball? Due via By 11:30 am, 25 January You may work in a group containing no more than 5 individuals, all of whom must be students in this class.

Assignment: “ Construct” Scale Model of the Solar System Sun is a basketball. Place basketball in front of Mike the Tiger’s habitat. Walk to Earth’s distance, turn around and take a picture of the basketball (sun). Walk to Jupiter’s distance, take picture of sun. Walk to Neptune’s distance, take picture of sun. Assemble all images, along with explanations, into a PDF document. How far away is our nearest neighbor basketball? Due via By 11:30 am, 25 January You may work in a group containing no more than 5 individuals, all of whom must be students in this class.

Assignment: “ Construct” Scale Model of the Solar System Sun is a basketball. Place basketball in front of Mike the Tiger’s habitat. Walk to Earth’s distance, turn around and take a picture of the basketball (sun). Walk to Jupiter’s distance, take picture of sun. Walk to Neptune’s distance, take picture of sun. Assemble all images, along with explanations, into a PDF document. How far away is our nearest neighbor basketball? Due via By 11:30 am, 25 January You may work in a group containing no more than 5 individuals, all of whom must be students in this class.

Assignment: “ Construct” Scale Model of the Solar System Sun is a basketball. Place basketball in front of Mike the Tiger’s habitat. Walk to Earth’s distance, turn around and take a picture of the basketball (sun). Walk to Jupiter’s distance, take picture of sun. Walk to Neptune’s distance, take picture of sun. Assemble all images, along with explanations, into a PDF document. How far away is our nearest neighbor basketball? Due via By 11:30 am, 25 January You may work in a group containing no more than 5 individuals from this class.

Assignment :

Click on “Calendar” link. Access assignment (in PDF format) from a link under today’s class date.

Calendar

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Calendar Suppose you lived on the planet Mars and were responsible for constructing a Martian calendar.

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Calendar Suppose you lived on the planet Jupiter and were responsible for constructing a Jovian calendar.

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune

Information on Planets [Drawn principally from Appendices 1, 2 & 3] Planet Rotation Period (solar days) Orbital (sidereal) Period (solar days) Inclination of equator to orbit (degrees) “Moon’s” orbital period (solar days) Earth °27.32 Mars ° Two satellites: & Jupiter ° Thirty-nine satellites! Mercury ½° No satellites  Venus243 (R) ° No satellites  Uranus (R) 30, ° Twenty-seven satellites! Saturn Neptune