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Pluto Has Another Moon
Topic: Outer Solar System
Summary: Astronomers have discovered a fourth moon orbiting the dwarf planet Pluto. Studying icy dwarfs like Pluto can help astrobiologists understand the diversity of worlds that might exist throughout the Universe.

Neptune Comes Full Circle
Topic: Outer Solar System
Summary: On July 11, 2011, Neptune made its first full orbit of the Sun since its discovery in 1846.

Clocking Neptune's Spin
Topic: Outer Solar System
Summary: By tracking atmospheric features on Neptune, scientists have determined the planet's rotation. It is the first time that such a feat has been achieved for a gas planet in our solar system other than Jupiter.

You Can Hunt for Icy Worlds
Topic: Outer Solar System
Summary: A new website allows the public to discover Kuiper Belt objects in the outer solar system. This region of space holds many mysteries for astrobiologists. Objects from the Kuiper Belt could have played a role in life's origins, and may have caused major impact events on Earth.

Voyager on the Edge
Topic: Outer Solar System
Summary: New calculations indicate that NASA's Voyager 1 spacecraft will leave the Solar System earlier than previously thought.

Magnetic Bubbles at the Edge of the Solar System
Topic: Outer Solar System
Summary: NASA's Voyager spacecraft has discovered that the edge of our solar system may be filled with a turbulent sea of magnetic bubbles.

Haumea Shines with Crystalline Ice
Topic: Outer Solar System
Summary: A new study shows that the dwarf planet Haumea and one of its satellites are covered in water-ice due to tidal forces between them and the heat of radiogenic elements.

Messages From the Edge of the Solar System
Topic: Outer Solar System
Summary: More than 30 years after they left Earth, NASA's twin Voyager probes are now returning data from the edge of the Solar System. With each passing day they are beaming back a message that, to scientists, is both unsettling and thrilling.

Pluto Has Carbon Monoxide in its Atmosphere
Topic: Outer Solar System
Summary: Astronomers have discovered carbon monoxide gas in the atmosphere of Pluto. Pluto is the only 'dwarf planet' known to have an atmosphere, and it appears that it may have grown in size over the last decade.

Comet Caused Rings to Ripple
Topic: Outer Solar System
Summary: Using data from three NASA separate missions, scientists have traced ripples in the rings of Saturn and Jupiter to collisions with cometary fragments. Understanding the local environments of Saturn and Jupiter can help astrobiologists determine the habitability of moons that orbit these giant planets.

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