2000 basaltic andesitic hamilton et al 2001 basaltic

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Unformatted text preview: 3/45/40) Extrapolated to 0.3% S, Molar Fe2+/Fetotal from Mossbauer Apatite TES Surface Type 2 Obscured By Dust TES Surface Type 1 Interpretations of Spectral Compositions TES Surface Type 2 Obscured By Dust TES Surface Type 1 Basaltic Andesitic Bandfield et al., 2000 Basaltic Andesitic Hamilton et al., 2001 Basaltic Wyatt and McSween., 2002 Altered Basalt Vastitas Borealis Formation Asteroids Asteroids Asteroids: Nature Asteroids: Nature Asteroid is Greek for "star-like“. Asteroids are small rocky objects that look like stars in Asteroids small telescopes, except that they move across the sky like planets and are part of the Solar System. and Most asteroids are found in the Main Belt between Mars and Most Main Jupiter and in the Kuiper Belt beyond Neptune. Kuiper Many exist in near-Earth space too and are known as NearMany NearEarth Asteroids or NEAs. Other smaller populations exist too: Trojans, Apollos, Amors, Other Centaurs,… Centaurs,… There may be 1,000,000+ asteroids >1 km in diameter. Asteroids: The Main Belt Asteroids: The Main Belt • The Main Belt extends from about 2.2 to 3.3 AU • Most of the orbits lie at or near (±10° to 20°) the plane of the ecliptic •...
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