Meteorites,Comets and Asteroids

  • In 1908, an object originating from space impacted the Earth and leveled 830 square miles of forest in Siberia. The origins of this object were a mystery until now. With science performed on the space shuttle, researchers have determined that the 1908 Tunguska explosion was
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  • A new study shows that frequent meteorite impacts during an early period of the solar system known as the 'Late Heavy Bombardment' may have furnished the Earth and other planets like Mars with liquid water. By providing a source of water for the Earth's oceans,
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  • Astrometry is a method of detecting planets by precisely measuring the motion of stars as planets tugs them back and forth ever so slightly. The technique was first attempted 50 years ago, but has failed to turn up any extrasolar planets until now.
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  • A new study indicates that the bombardment of Earth nearly 4 billion years ago by giant asteroids would not have been sufficient to extinguish early life on the planet. The study has important implications in understanding the timing of life's origin on Earth.
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  • By studying sun-like stars, astronomers may have solved a mystery about the composition of comets. The study provides new insight into the processes behind planet and comet formation.
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  • A group of Swiss geologists, who have conducted systematic meteorite searches in Oman since 2001, recently returned from their latest hunt. Their findings could provide valuable information about the early history of the solar system.
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  • Scientists studying the chemical composition of comets have determined that they contain missing ingredients needed for life on the primordial Earth. The study lends weight to the idea that cometary impacts played an important role in the origin of life.
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  • Scientists studying the chemical composition of comets have determined that they contain missing ingredients needed for life on the primordial Earth. The study lends weight to the idea that cometary impacts played an important role in the origin of life.
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  • The Velocity of Planets
    Researchers have developed a new technique to detect small, extrasolar planets that are more Earth-like than the majority of planets discovered thus far. They call it the "astro-comb", and it could help astrobiologists in the search for distant, habitable worlds.
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  • The Crowded Universe
    After two decades of planet searching, Alan Boss has written a book about how far we have come and how close we are to answering the question of whether we are alone in the universe.
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