PPT-Radar Speckles and Near-Earth Asteroids

Michael Busch with thanks to JeanLuc Margot Lance Benner Walter Brisken and Adam Deller Radar Speckle Patterns Target D target d Separation Baseline B Earth and Antennas. -2-Stony-Ironmeteorites are made up of about half metal and half silicates.Their composition sug-gests that theferentiated planetoids.Ironmeteorites contain mostlyFe and some Ni, and thege differentia Unit 4. Appearances of comet Kohoutek (1973), Halley (1986), and Hale-Bopp (1997) caused great concern among superstitious.. Comet Hyakutake in 1996. Throughout history, comets have been considered as portents of doom, even very recently: . Dan Britt. University of Central Florida. What Do We Need to Know About NEA Physical Properties?. Asteroid Structure. Rubble pile?. Coherent object?. Material Strength. Tough? Weak?. Mineralogy. Thermal Properties. & Meteors. Lectures will be available at: . homework.uoregon.edu. /pub/. elsa. /. haydock. / . Asteroid Belt Basic . Characteristics. Estimated 1 million are ~1km or larger; millions more are . smaller. Comets. one of the most glorious things to see in the sky is a comet.. May be visible for only days, weeks, or months. Comet. : chunks of ice and dust whose orbits are very long, narrow ellipses.. Think of them as a “dirty snowball”. shinning universe . there are billions of stars , millions of meteors, . hundreds of stars. , plenty of planets, many moons , a unique sun and many more celestial bodies. . Solar System. Definitions. Solar system- Is a sun and everything within reach of it’s gravity.. Sun- A star. Giant ball of hot gas. Produces heat, light, and other kinds of energy.. Asteroid- Is a mini planet (the largest would stretch from Washington to Kentucky). Information for this PowerPoint obtained from: . NSTA Online Module: Solar System: . Asteroids, Comets, and Meteorites . NASA. ESA. Windows2Universe.org. This is a meteorite that had been broken off of Mars from a large impact meteorite. It spent millions of years in space before landing in Antarctica.. I. Comets. A. What is a Comet?: . It is a small body orbiting the Sun that develops a ______ (a fuzzy atmosphere) and/or a ____ as it approaches the Sun. Comet nuclei range from _____________. __________. . I. Comets. A. What is a Comet?: . It is a small body orbiting the Sun that develops a ______ (a fuzzy atmosphere) and/or a ____ as it approaches the Sun. Comet nuclei range from _____________. __________. . shinning universe . there are billions of stars , millions of meteors, . hundreds of stars. , plenty of planets, many moons , a unique sun and many more celestial bodies. . th. , 2018. Pre-Class:. Where do we find asteroids in our solar system?. http://. www.esa.int. Comet 67P/. Churyumov-Gerasimenko. seen from . Rosetta. In This Lesson:. Solar System Debris. (Lesson 2 of 2). Chapter 20. A loose collection of ice, dust and small rocky particles. Orbits are very long and narrow ellipses. Comprised of 2 parts: Head and Tail. Originate from either Kuiper belt or . Oort. cloud. The semi-major axis is represented by a and the semi-minor axis is b.. Therefore, e=0 for a circular orbit..  . Question:. Use the sheet of information below to summarize . the list of planets in order of:.