Indian, Express2012-03-072012-03-072011-02-16http://hdl.handle.net/11007/839Tom Gehrels and his works Tom Gehrels is an American astronomer, Professor Planeary Sciences, and Astronomer at the and has discovered, jointly with the husband and wife team of Cornelis Johannes Van Houten and Ingrid Van Houter-Groeneveld, over 4000 asteroids, including Appllo asteroids, Amor asteroids, including Apolio asteroids, Amor asteroids and a dozens of trojan asteroidsenTom GehrelsUniverseAsteroidsArticle