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A reporter's PressPass is required to access this story until the embargo expires on 26-Oct-2014 2:00 PM EDT

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Close Encounters: Comet Siding Spring Seen Next to Mars

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A composite Hubble Space Telescope image provides the position of comet Siding Spring during the comet's closest approach to Mars on October 19, 2014. Join Hubble astronomers for a live discussion at 3pm today during the Comet Siding Spring/Mars Hubble Hangout at https://plus.google.com/u/0/events/cq3l54o0if0solg51h5tocbf508.

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Lucky Star Escapes Black Hole With Minor Damage

Astronomers have gotten the closest look yet at what happens when a black hole takes a bite out of a star—and the star lives to tell the tale.

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Organic Molecules in Titan's Atmosphere Are Intriguingly Skewed

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While studying the atmosphere on Saturn’s moon Titan, scientists discovered intriguing zones of organic molecules unexpectedly shifted away from its north and south poles. These misaligned features seem to defy conventional thinking about Titan’s windy atmosphere, which should quickly smear out such off-axis concentrations.

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From Sub-Neptunes to Super-Earths: The Search for Habitable Worlds

During a live Google Hangout, three astrophysicists – Zachory Berta-Thompson, Bruce Macintosh and Marie-Eve Naud – discussed the huge variety of planets discovered so far, how close we are to being able to see other Earth-like planets, and all that remains unknown.

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Big Black Holes Can Block New Stars

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Massive black holes spewing out radio-frequency-emitting particles at near-light speed can block formation of new stars in aging galaxies, a study has found.

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Hubble Finds Extremely Distant Galaxy through Cosmic Magnifying Glass

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Using the Hubble Space Telescope and the lensing power of giant galaxy cluster Abell 2744, astronomers may have made the most reliable distance measurement yet of an object that existed in the very early universe. The galaxy, estimated to be over 13 billion light-years away, is one of the farthest, faintest, and smallest galaxies ever seen.

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NASA's Hubble Telescope Finds Potential Kuiper Belt Targets for New Horizons Pluto Mission

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NASA's Hubble Space Telescope has uncovered three Kuiper Belt objects that the agency's New Horizons spacecraft could potentially visit after it flies by Pluto in July 2015.

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Astronomers Spot Faraway Uranus-Like Planet

Our view of other solar systems just got a little more familiar, with the discovery of a planet 25,000 light-years away that resembles our own Uranus.

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CRISM Prepares for Mars-Grazing Comet Siding Spring

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Up to and during Comet Siding Spring’s flyby of Mars on Oct. 19, NASA’s Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) will attempt to capture data about the comet that are unobtainable from Earth.

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