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[News & Analysis] Planetary Science: Cassini Spies an Ocean Inside Saturn’s Icy, Gassy Moon Titan

Cassini scientists report online this week in Science that they have divined an ocean of water 100 kilometers beneath Titan’s icy surface.

Author: Richard A. Kerr

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[News Focus] Space Science: A New Dawn for China’s Space Scientists

China’s crewed space program has won admiration for the engineering prowess on display earlier this week in the Shenzhou 9 mission. Upcoming science missions hope to steal some of the spotlight.<br><br>Author: Richard Stone

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[News Focus] Space Science: Milestones of China’s Space Program

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[News Focus] Space Science: Entangled Secret Messages From Space

Last summer’s test that sent a stream of entangled photons across Qinghai Lake—China’s biggest—was a proving ground for distributing quantum keys in the final frontier: space.<br><br>Author: Richard Stone

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[News Focus] Space Science: Run by the Army for the Army?

China’s 11 January 2007 antisatellite missile test targeted at an aging weather satellite was a visible exercise in muscle-flexing.<br><br>Author: Richard Stone

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Evidence of life on Mars could come from Martian moon Phobos

A mission to a Martian moon could return with alien life, according to experts, but don’t expect the invasion scenario presented by summer blockbusters like “Men in Black 3″ or “Prometheus.” A sample from the moon Phobos, scientists believe, would almost surely contain Martian material blasted off from large asteroid impacts. If life on Mars exists or existed within the last 10 million years, a mission to Phobos could yield our first evidence of life beyond Earth.

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First-ever changes in an exoplanet atmosphere detected

Astronomers have using data made an unparalleled observation, detecting significant changes in the atmosphere of a planet located beyond our solar system.

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Has the speediest pulsar been found?

The fastest moving pulsar may have been found about 30,000 light years from Earth. This object is known as IGR J1104-6103 and may be racing away from a supernova remnant at about 6 million miles per hour. If confirmed, this would challenge theorists to create models that explain such super speeds out of supernova explosions.

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What you eat can prevent arsenic overload

New research has demonstrated that people who ate more dietary vitamin B12 and animal protein had lower levels of arsenic (measured by deposition in toenails). Total dietary fat, animal fat, vegetable fat and saturated fat were also all associated with lower levels of arsenic, while omega 3 fatty acids, such as those found in fish oil, were associated with increased arsenic.

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Insights into primate diversity: Lessons from the rhesus macaque

The rhesus macaque has three times as much genetic variation as humans. However despite much of this extra variation within genes, protein function is not affected. Consequently damaging variations are at similar levels in macaques and humans — indicating a strong selection pressure to maintain gene function regardless of mutation rate or population size.

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