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    Mysterious cosmic rays constantly bombard Earth from outer space. Now scientists find these energetic particles could limit where life as we know it might exist on alien planets.
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    Prior attempts to look for alien laser signals concentrated on isolated and intense bursts of light. Now scientists are focusing on repetitive but much fainter laser signals received over a longer amount of time.
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    NASA plans to send the first humans to Mars sometime in the next quarter-century. Such a mission will push the boundaries of teamwork for the handful of astronauts selected, so scientists are developing devices aimed at monitoring astronauts to learn how cooperation fluctuates over the
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    Scientists have found that a common antifreeze compound that might exist on Saturn's moon Titan can get trapped within ice-like cages. This discovery could influence our ideas about the evolution and development of life on Titan and other icy celestial bodies.
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    Research that sheds light on how Australian opals formed indicates the red dirt in the land Down Under might be similar to the red surface of Mars.
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    A new study finds that planets orbiting white or brown dwarfs are unlikely to be habitable for life as we know it.
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    The Icebreaker Life mission to Mars, currently being developed, would drill down about 3 feet and scan the ice shavings for organic biomarkers — molecules that are too complex to be produced non-biologically and could be conclusive evidence of life.
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    Some alien worlds orbiting red dwarf stars might resemble giant eyeballs. Researchers are now proposing experiments to simulate these distant planets and see how capable they are of supporting life.
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    For the first time, scientists find that microbes from Earth can survive and grow even in the mix of drastically low pressure, freezing temperatures and oxygen-starved conditions seen on Mars.
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    Chemicals such as those found in hairspray might one day serve as signs that aliens have reshaped distant worlds, researchers say.
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    Researchers says that methane generated by meteors could make alien worlds look like they are inhabited by life -- even though they are not.
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    By weaving together biology and technology, Angelo Vermeulen's artistic and scientific explorations could help rethink how people interact with the systems that can keep them in both space and on Earth.
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    In the largest ice caves on Earth, spacesuits and remote-controlled planetary rovers were recently tested in a five-day odyssey in the Alps designed to mimic potential future missions on Mars.
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    Cosmic impacts on Mars might have sent temperatures skyrocketing upward on the Red Planet in ancient times, enough to trigger a runaway greenhouse effect.
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    Microbes living at the edges of Arctic ice sheets could help researchers find evidence for life on Mars, Jupiter’s moon Europa, or Saturn's moon Enceladus.
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