Erik Ian Asphaug

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1	Invoking a Hit-and-Run Collisional Origin for Planet Mercury - PSRD \| A CosmoSparks report Add to Reading List Source URL: www.psrd.hawaii.edu Language: English - Date: 2014-07-11 21:17:14 Lunar science Terrestrial planets Space science Erik Ian Asphaug Mercury MESSENGER Planet Asphaug Giant impact hypothesis Astronomy Planetary science Space
2	PDF Document Add to Reading List Source URL: www-geodyn.mit.edu Language: English - Date: 2006-12-23 19:35:34 S-type asteroids Planetary defense Lunar science Asteroid Rubble pile 243 Ida Erik Ian Asphaug Impact crater Regolith Planetary science Astronomy Asteroids