PPT-Formation of our Moon: The Giant Impact Hypothesis

Michelle Kirchoff Southwest Research Institute Center for Lunar Origin and Evolution Southwest Research Institute in Boulder http wwwboulderswriedu Center for Lunar Origin and Evolution CLOE. g Kring et al 1991 Hildebrand et al 1991 Kring and Boynton 1992 demonstrates that impact crat ering can affect both the geologic and biologic evolution of a planet as pr oposed by Nobelwinning L Alvare z and others This has led scientists to wonder i Called Luna by the Romans, Selene and Artemis by the Greeks, and many other names in other mythologies. . The Moon has been known since prehistoric times. It Is the brightest object in the sky after the Sun. As the Moon orbits around the Earth once per month, the angle between the Earth, the Moon and the Sun changes; we see this as the cycle of the Moon's phases. The time between successive new moons is 29.5 days (709 hours. Lunar plains & craters. Manned lunar exploration. The lunar interior. The Moon. ’. s geologic history. The formation of the Moon. Moon Data (Table 10-1). Moon Data: Numbers. Diameter. : 3,476. .. Planet People. The people that sell planets. .. Jazzy. . Jupiter. Taylor Lautner. Taylor says it’s his new favorite place.. He also say’s he will go there every summer.. Lovely Location. Jupiter is the fifth planet from the sun.. Lecture by C.P. Dullemond. Institute for Theoretical Astrophysics. Heidelberg University. Image . Credit. : NASA. The Big Questions. After C. Mordasini. > 10 billion galaxies in the Universe. 100 billion stars in each. Geochronometry. Isotope tracing. History . of “primordial” . Pb. Meteorite samples . Chondrite. – a primitive, undifferentiated meteorite. CI refers to a particular class of carbonaceous . chondrite. Lunar plains & craters. Manned . lunar . exploration. The lunar interior. The Moon. ’. s geologic history. The formation of the Moon. Moon Data (Table 10-1). Moon Data: Numbers. Diameter. : 3,476. Part 1 . Origin of the elements . Part 2. Geochronometry. : Age of Earth . Formation of Earth and Moon. Differentiation of core and mantle. . Isotope tracing: sequence of events. . What have we learned so far?. Such deep pools of melt should have differentiated into a series of rock types. A team from Australian National University, the University of Tennessee, and NASA Johnson Space Center show that a clast in an Apollo 16 impact breccia likely formed 4.2 Ga ago by minerals accumulating in a sea of impact melt. . By Brad Shaver. Previous Models. Fission . Capture. Binary Accretion . Fission Model. Idea was Earth spinning at high rate.. Tossed material off surface.. Problem is that the moon . should be . orbiting at earth’s equator!. The Moon has been known since prehistoric times. It Is the brightest object in the sky after the Sun. As the Moon orbits around the Earth once per month, the angle between the Earth, the Moon and the Sun changes; we see this as the cycle of the Moon's phases. The time between successive new moons is 29.5 days (709 hours. Hypothesis: a reasonable statement that can be tested (predicts). Law: statement or mathematical expression of something that always happens; testable (describes). Theory: broad generalization that is based on observation, experimentation, and reasoning; not testable; is modified as new information is discovered (explains). Formation of the Moon Before visit to the Observatory Overview Introduction to the Formation of the Moon Video about the Evolution of the Moon Classroom demonstrations on distances to the Moon Classroom activity – Craters on the Moon 14 billion years ago. Creation of all matter. Hydrogen and Helium the first. More complex elements evolved through time. The Expanding . Universe. The Doppler effect is used to document the expanding universe.